diff --git a/lib/process-services-cloud/src/lib/models/data-column-custom-data.ts b/lib/process-services-cloud/src/lib/models/data-column-custom-data.ts
index 8b8db0620d..b63b94e634 100644
--- a/lib/process-services-cloud/src/lib/models/data-column-custom-data.ts
+++ b/lib/process-services-cloud/src/lib/models/data-column-custom-data.ts
@@ -18,5 +18,6 @@
 export const PROCESS_LIST_CUSTOM_VARIABLE_COLUMN = 'process-variable-column';
 export interface ProcessListDataColumnCustomData {
     assignedVariableDefinitionIds: string[];
+    variableDefinitionsPayload: string[];
     columnType: string;
 }
diff --git a/lib/process-services-cloud/src/lib/models/filter-cloud-model.ts b/lib/process-services-cloud/src/lib/models/filter-cloud-model.ts
index 716ac58473..c8be4ebc56 100644
--- a/lib/process-services-cloud/src/lib/models/filter-cloud-model.ts
+++ b/lib/process-services-cloud/src/lib/models/filter-cloud-model.ts
@@ -49,7 +49,7 @@ export class TaskQueryCloudRequestModel {
     completedFrom?: string;
     completedTo?: string;
     candidateGroupId?: string;
-    variableDefinitions?: string[];
+    variableKeys?: string[];
 
     constructor(obj?: any) {
         if (obj) {
@@ -84,7 +84,7 @@ export class TaskQueryCloudRequestModel {
             this.completedTo = obj.completedTo;
             this.completedDate = obj.completedDate;
             this.candidateGroupId = obj.candidateGroupId;
-            this.variableDefinitions = obj.variableDefinitions;
+            this.variableKeys = obj.variableKeys;
         }
     }
 }
diff --git a/lib/process-services-cloud/src/lib/process/process-list/components/process-list-cloud.component.spec.ts b/lib/process-services-cloud/src/lib/process/process-list/components/process-list-cloud.component.spec.ts
index ace1805365..a7baa41564 100644
--- a/lib/process-services-cloud/src/lib/process/process-list/components/process-list-cloud.component.spec.ts
+++ b/lib/process-services-cloud/src/lib/process/process-list/components/process-list-cloud.component.spec.ts
@@ -115,6 +115,7 @@ describe('ProcessListCloudComponent', () => {
                         getDataColumnMock({
                             id: 'variableColumnId',
                             customData: {
+                                variableDefinitionsPayload: ['processKey/variableName'],
                                 assignedVariableDefinitionIds: ['variableDefinitionId'],
                                 columnType: PROCESS_LIST_CUSTOM_VARIABLE_COLUMN
                             }
@@ -321,7 +322,7 @@ describe('ProcessListCloudComponent', () => {
         component.ngAfterContentInit();
         component.reload();
 
-        expect(component.requestNode.variableDefinitions).not.toBeDefined();
+        expect(component.requestNode.variableKeys).not.toBeDefined();
     });
 
     it('should request process variable if column for process variable is displayed', () => {
@@ -333,7 +334,7 @@ describe('ProcessListCloudComponent', () => {
                 entries: [{
                     entry: {
                         key: ProcessListCloudPreferences.columnsVisibility,
-                        value: '{"variableColumnId":true, "2":true}'
+                        value: '{"variableColumnId":"id", "2":true}'
                     }
                 }]
             }
@@ -342,7 +343,7 @@ describe('ProcessListCloudComponent', () => {
         component.ngAfterContentInit();
         component.reload();
 
-        expect(component.requestNode.variableDefinitions).toEqual(['variableDefinitionId']);
+        expect(component.requestNode.variableKeys).toEqual(['processKey/variableName']);
     });
 
     it('should reload tasks when reload() is called', (done) => {
diff --git a/lib/process-services-cloud/src/lib/process/process-list/components/process-list-cloud.component.ts b/lib/process-services-cloud/src/lib/process/process-list/components/process-list-cloud.component.ts
index b28065acdb..8a47d73b66 100644
--- a/lib/process-services-cloud/src/lib/process/process-list/components/process-list-cloud.component.ts
+++ b/lib/process-services-cloud/src/lib/process/process-list/components/process-list-cloud.component.ts
@@ -440,7 +440,7 @@ export class ProcessListCloudComponent extends DataTableSchema<ProcessListDataCo
             suspendedTo: this.suspendedTo,
             completedDate: this.completedDate,
             sorting: this.sorting,
-            variableDefinitions: this.getRequestNodeVariableIds()
+            variableKeys: this.getVariableDefinitionsRequestModel()
         };
 
         return new ProcessQueryCloudRequestModel(requestNode);
@@ -469,14 +469,17 @@ export class ProcessListCloudComponent extends DataTableSchema<ProcessListDataCo
         return sorting.length && sorting[0].orderBy && sorting[0].direction;
     }
 
-    private getRequestNodeVariableIds(): string[] | undefined {
+    private getVariableDefinitionsRequestModel(): string[] | undefined {
         const displayedVariableColumns = this.columns
             .filter(column =>
                 column.customData?.columnType === PROCESS_LIST_CUSTOM_VARIABLE_COLUMN &&
                 column.isHidden !== true
             )
-            .map(column => column.customData.assignedVariableDefinitionIds)
-            .reduce((allIds, ids) => [...ids, ...allIds], []);
+            .map(column => {
+                const variableDefinitionsPayload = column.customData.variableDefinitionsPayload;
+                return variableDefinitionsPayload;
+            })
+            .reduce((variablesPayload, payload) => [...variablesPayload, ...payload], []);
 
         return displayedVariableColumns.length ? displayedVariableColumns : undefined;
     }
diff --git a/lib/process-services-cloud/src/lib/process/process-list/datatable/process-list-datatable-adapter.spec.ts b/lib/process-services-cloud/src/lib/process/process-list/datatable/process-list-datatable-adapter.spec.ts
index 2e712f4f76..9e27b691b4 100644
--- a/lib/process-services-cloud/src/lib/process/process-list/datatable/process-list-datatable-adapter.spec.ts
+++ b/lib/process-services-cloud/src/lib/process/process-list/datatable/process-list-datatable-adapter.spec.ts
@@ -41,6 +41,7 @@ describe('ProcessListDatatableAdapter', () => {
             title: 'columnDisplayName1',
             customData: {
                 assignedVariableDefinitionIds: ['1'],
+                variableDefinitionsPayload: ['processKey/variableName'],
                 columnType: PROCESS_LIST_CUSTOM_VARIABLE_COLUMN
             }
         });
diff --git a/lib/process-services-cloud/src/lib/process/process-list/models/process-cloud-query-request.model.ts b/lib/process-services-cloud/src/lib/process/process-list/models/process-cloud-query-request.model.ts
index 7e937448ec..e64f8d9bb4 100644
--- a/lib/process-services-cloud/src/lib/process/process-list/models/process-cloud-query-request.model.ts
+++ b/lib/process-services-cloud/src/lib/process/process-list/models/process-cloud-query-request.model.ts
@@ -42,7 +42,7 @@ export class ProcessQueryCloudRequestModel {
    maxItems: number;
    skipCount: number;
    sorting?: ProcessListCloudSortingModel[];
-   variableDefinitions?: string[];
+   variableKeys?: string[];
 
     constructor(obj?: any) {
        if (obj) {
@@ -70,7 +70,7 @@ export class ProcessQueryCloudRequestModel {
            this.maxItems = obj.maxItems;
            this.skipCount = obj.skipCount;
            this.sorting = obj.sorting;
-           this.variableDefinitions = obj.variableDefinitions;
+           this.variableKeys = obj.variableKeys;
        }
    }
 }
diff --git a/lib/process-services-cloud/src/lib/process/process-list/services/process-list-cloud.service.ts b/lib/process-services-cloud/src/lib/process/process-list/services/process-list-cloud.service.ts
index b6b5320b9e..80b2106178 100644
--- a/lib/process-services-cloud/src/lib/process/process-list/services/process-list-cloud.service.ts
+++ b/lib/process-services-cloud/src/lib/process/process-list/services/process-list-cloud.service.ts
@@ -88,7 +88,7 @@ export class ProcessListCloudService extends BaseCloudService {
         requestNode: ProcessQueryCloudRequestModel,
         property: keyof ProcessQueryCloudRequestModel
     ) {
-        if (property === 'variableDefinitions' && requestNode[property]?.length > 0) {
+        if (property === 'variableKeys' && requestNode[property]?.length > 0) {
             return `${requestNode[property].map(variableId => variableId).join(',')}`;
         }
 
diff --git a/lib/process-services-cloud/src/lib/services/variable-mapper.sevice.spec.ts b/lib/process-services-cloud/src/lib/services/variable-mapper.sevice.spec.ts
index 520481e30e..3ddc4036d4 100644
--- a/lib/process-services-cloud/src/lib/services/variable-mapper.sevice.spec.ts
+++ b/lib/process-services-cloud/src/lib/services/variable-mapper.sevice.spec.ts
@@ -42,6 +42,7 @@ describe('VariableMapperService', () => {
             title: 'column name',
             key: '',
             customData: {
+                variableDefinitionsPayload: ['processKey/variableName'],
                 assignedVariableDefinitionIds: [variable.variableDefinitionId],
                 columnType: 'text'
             }
diff --git a/lib/process-services-cloud/src/lib/services/variable-mapper.sevice.ts b/lib/process-services-cloud/src/lib/services/variable-mapper.sevice.ts
index 8aa733ec52..f2f0de1b02 100644
--- a/lib/process-services-cloud/src/lib/services/variable-mapper.sevice.ts
+++ b/lib/process-services-cloud/src/lib/services/variable-mapper.sevice.ts
@@ -33,7 +33,7 @@ export class VariableMapperService {
                 return instance;
             }
 
-            const variablesMap = (instance.variables ?? []).reduce((variableAccumulator, variable) => {
+            const variablesMap = (instance.variables ?? []).reduce<{[columnTitle: string]: ProcessInstanceVariable}>((variableAccumulator, variable) => {
                 const processVariableDefinitionId = variable.variableDefinitionId;
 
                 const column = columnsByVariableId[processVariableDefinitionId];
diff --git a/lib/process-services-cloud/src/lib/task/task-list/components/task-list-cloud.component.ts b/lib/process-services-cloud/src/lib/task/task-list/components/task-list-cloud.component.ts
index dcb45f13bd..fad4fa2e92 100644
--- a/lib/process-services-cloud/src/lib/task/task-list/components/task-list-cloud.component.ts
+++ b/lib/process-services-cloud/src/lib/task/task-list/components/task-list-cloud.component.ts
@@ -214,20 +214,23 @@ export class TaskListCloudComponent extends BaseTaskListCloudComponent<ProcessLi
             completedTo: this.completedTo,
             completedDate: this.completedDate,
             candidateGroupId: this.candidateGroupId,
-            variableDefinitions: this.getRequestNodeVariableIds()
+            variableKeys: this.getRequestNodeVariables()
         };
 
         return new TaskQueryCloudRequestModel(requestNode);
     }
 
-    private getRequestNodeVariableIds(): string[] | undefined {
+    private getRequestNodeVariables(): string[] | undefined {
         const displayedVariableColumns: string[] = (this.columns ?? [])
             .filter(column =>
                 column.customData?.columnType === 'process-variable-column' &&
                 column.isHidden !== true
             )
-            .map(column => column.customData.assignedVariableDefinitionIds)
-            .reduce((allIds, ids) => [...ids, ...allIds], []);
+            .map(column => {
+                const variableDefinitionsPayload = column.customData.variableDefinitionsPayload;
+                return variableDefinitionsPayload;
+            })
+            .reduce((allRequestKeys, requestKeys) => [...requestKeys, ...allRequestKeys], []);
 
         return displayedVariableColumns.length ? displayedVariableColumns : undefined;
     }
diff --git a/lib/process-services-cloud/src/lib/task/task-list/datatable/task-list-datatable-adapter.spec.ts b/lib/process-services-cloud/src/lib/task/task-list/datatable/task-list-datatable-adapter.spec.ts
index ecdd4efb86..e1b8fe0b62 100644
--- a/lib/process-services-cloud/src/lib/task/task-list/datatable/task-list-datatable-adapter.spec.ts
+++ b/lib/process-services-cloud/src/lib/task/task-list/datatable/task-list-datatable-adapter.spec.ts
@@ -51,6 +51,7 @@ describe('TasksListDatatableAdapter', () => {
             title: 'columnDisplayName1',
             customData: {
                 assignedVariableDefinitionIds: ['variableDefinitionId'],
+                variableDefinitionsPayload: ['processKey/variableName'],
                 columnType: PROCESS_LIST_CUSTOM_VARIABLE_COLUMN
             }
         });
diff --git a/lib/process-services-cloud/src/lib/task/task-list/services/task-list-cloud.service.ts b/lib/process-services-cloud/src/lib/task/task-list/services/task-list-cloud.service.ts
index 757c5ea7c0..d5d9551bee 100644
--- a/lib/process-services-cloud/src/lib/task/task-list/services/task-list-cloud.service.ts
+++ b/lib/process-services-cloud/src/lib/task/task-list/services/task-list-cloud.service.ts
@@ -72,8 +72,8 @@ export class TaskListCloudService extends BaseCloudService implements TaskListCl
                 !this.isExcludedField(propertyKey) &&
                 this.isPropertyValueValid(requestNode, propertyKey)
             ) {
-                if (propertyKey === 'variableDefinitions' && requestNode[propertyKey]?.length > 0) {
-                    queryParam['variableDefinitions'] = requestNode[propertyKey].join(',');
+                if (propertyKey === 'variableKeys' && requestNode[propertyKey]?.length > 0) {
+                    queryParam[propertyKey] = requestNode[propertyKey].join(',');
                 } else {
                     queryParam[propertyKey] = requestNode[propertyKey];
                 }