Hiding a variable on the Catalog Request and Tasks, cannot view the field value in workflow

[bobkindelbe]

I am hiding a variable (Delivery Method) on the Catalog Request and Task forms. In workflow, I need to toggle on the variable value in a workflow, but the value is null. How do you retrieve a hidden variable that only shows on the RITM form in the work flow ?

[bobkindelbe]

These are the Delivery Methods, Pickup or Delivery. The value for delivery_method is null. This is because I hide this variable on the Request Form and the Catalog Task. It is shown on the RITM form.