conditional movement of workflow to the next stage

I've created a custom field 'CR Status' which is having many lookup values like newCR, CR-cancelled, CR at UAT, CR-cancelled, CR-closed etc.

I want to create a workflow such that if the CR status value is 'CR Closed' then the workflow should move to the next stage (Execution stage in my case) else it will remain at the same stage.

If else thing will not work in this case, I think.

Which workflow property should I use or what code should I write for this?

Dinesh Bhardwaj