requisition type in business rule condition

In create new requisition page , in vbs , I want some fields to be hidden/read only etc. but based on value selected in requisition type .

If requisition type is 'Standard' I want some fields to be hidden , and if requisition type is 'Pipeline' , I want those fields to be visible , but finding no way to achieve this in business rule condition . Is there any workaround or advance expression for business rule condition that I can use ?