question

Hi @Mokhtar W,

To accomplish this, we will need to adjust your process flow and add a fixed resource global list and a global variable.

1. Please watch this GIF for instructions on how to create a fixed resource global list.
   1. 
2. Please watch this GIF for instructions on how to create a global variable:
   1. 
3. Adjust your process flow to look like the following:
   1. 
4. In the first block of activities that moves the bin:
   1. Open the second Travel activity. In the destination field, click the custom code button
   2. Add the following code to this activity.
   3. Open the Assign Labels: Assign Next Processor to Token activity. Configure it like the following.
      1. 
      2. Insert the custom code for the Processor:

      3. /**Custom Code*/
         Object current = param(1);
         treenode activity = param(2);
         Token token = param(3);
         Variant assignTo = param(4);
         string labelName = param(5);
         treenode processFlow = ownerobject(activity);
         
         
         if (token.NextProcessorIterator == 1)
         {
         	return Model.find("filling process 1").as(Object);
         }
         if (token.NextProcessorIterator == 2)
         {
         	return Model.find("filling process 2").as(Object);
         }
         if (token.NextProcessorIterator == 3)
         {
         	return Model.find("filling process 3").as(Object);
         }
         

   4. Configure the Change Visual as follows:
      1. 
   5. Add the following custom code to the custom code activity called Custom Code: Iterate Global Variable

       /**Custom Code*/
      Object current = param(1);
      treenode activity = param(2);
      Token token = param(3);
      treenode processFlow = ownerobject(activity);
      
      
      ProcessorIterator++;
      ProcessorIterator = ProcessorIterator % 4;
      if (ProcessorIterator == 0)
      {
      	ProcessorIterator++;
      }
      

   Configure the following Activities in your Items Sub-Flow

   1. For the Assign Labels: Iterator, configure it as follows:

   1. 

5. Link the FillingProcessors list to the Fixed Resource global list created above.
6. Configure Pull from List: Processor as follows:

   1. 

7. Configure the Push to List: Return Processor as follows:

   1. 

This should give you the behavior you are looking for.

3processorsroundrobin.fsm