diff --git a/lib/process-services-cloud/src/lib/mock/process-instance-variable.mock.ts b/lib/process-services-cloud/src/lib/mock/process-instance-variable.mock.ts
index b56847f649..d5486b1ade 100644
--- a/lib/process-services-cloud/src/lib/mock/process-instance-variable.mock.ts
+++ b/lib/process-services-cloud/src/lib/mock/process-instance-variable.mock.ts
@@ -20,6 +20,7 @@ import { ProcessInstanceVariable } from '../models/process-instance-variable.mod
 export const getProcessInstanceVariableMock = (variable: Partial<ProcessInstanceVariable> = {}): ProcessInstanceVariable => ({
     id: 1,
     variableDefinitionId: 'variableDefinitionId',
+    processDefinitionKey: 'processDefinitionKey',
     value: 'value',
     appName: 'appName',
     createTime: 'createTime',
diff --git a/lib/process-services-cloud/src/lib/models/process-instance-variable.model.ts b/lib/process-services-cloud/src/lib/models/process-instance-variable.model.ts
index 5b7732cad8..2298abfce5 100644
--- a/lib/process-services-cloud/src/lib/models/process-instance-variable.model.ts
+++ b/lib/process-services-cloud/src/lib/models/process-instance-variable.model.ts
@@ -22,6 +22,7 @@ export type WithVariablesMap<T> = T & {
 export interface ProcessInstanceVariable  {
     id: number;
     variableDefinitionId: string;
+    processDefinitionKey: string;
     value: string;
     appName: string;
     createTime: string;
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 3ddc4036d4..06cbc59037 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
@@ -31,7 +31,8 @@ describe('VariableMapperService', () => {
 
     it('should map variables by column title', () => {
         const variable: ProcessInstanceVariable = getProcessInstanceVariableMock({
-            variableDefinitionId: 'variableDefinitionIdOne'
+            processDefinitionKey: 'processKey',
+            name: 'variableName'
         });
 
         const objectWithVariables = {
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 f2f0de1b02..4a98ffbda3 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
@@ -26,7 +26,7 @@ export class VariableMapperService {
         instancesList: T[] = [],
         columnsSchema: DataColumn<ProcessListDataColumnCustomData>[] = []
     ): Array<WithVariablesMap<T>> {
-        const columnsByVariableId = this.mapColumnKeysByVariableId(columnsSchema);
+        const columnsByVariables = this.mapColumnKeysByVariable(columnsSchema);
 
         const rowsViewModel = instancesList.map<WithVariablesMap<T>>((instance) => {
             if (!instance.variables?.length) {
@@ -34,9 +34,9 @@ export class VariableMapperService {
             }
 
             const variablesMap = (instance.variables ?? []).reduce<{[columnTitle: string]: ProcessInstanceVariable}>((variableAccumulator, variable) => {
-                const processVariableDefinitionId = variable.variableDefinitionId;
+                const processVariableDefinitionPayload =  `${variable.processDefinitionKey}/${variable.name}`;
 
-                const column = columnsByVariableId[processVariableDefinitionId];
+                const column = columnsByVariables[processVariableDefinitionPayload];
                 if (column) {
                     variableAccumulator[column] = {
                         ...variable,
@@ -56,23 +56,23 @@ export class VariableMapperService {
         return rowsViewModel;
     }
 
-    private mapColumnKeysByVariableId(
+    private mapColumnKeysByVariable(
         columnsSchema: DataColumn<ProcessListDataColumnCustomData>[]
-    ): { [variableId: string]: string } {
-        const columnsByVariableId = columnsSchema
+    ): { [key: string]: string } {
+        const columnsByVariables = columnsSchema
             .filter(column => !!column.customData)
-            .reduce<{ [variableId: string]: string }>((columnsByVariable, column) => {
+            .reduce<{ [key: string]: string }>((columnsByVariable, column) => {
                 const columnTitle = column.title;
-                const variableIds = column.customData.assignedVariableDefinitionIds;
+                const variables = column.customData.variableDefinitionsPayload;
 
-                variableIds.forEach((variableId) => {
-                    columnsByVariable[variableId] = columnTitle;
+                variables.forEach((key) => {
+                    columnsByVariable[key] = columnTitle;
                 });
                 return columnsByVariable;
 
             }, {});
 
-        return columnsByVariableId;
+        return columnsByVariables;
     }
 
     private mapProcessVariableTypes(variableType: string): DataColumnType {