Restrict flex fields Purchase order and BPA

Good morning everyone.

I have a flexfield in po_headers_all attribute1 and attribute2, both flexfields appear for Standard Purchase Order and for Blanket Purchase Agreements.

Would it be possible to make attribute1 appear only for purchase orders and attribute2 for purchase agreements?

I already have some ELs but I have not had any success.
#{bindings.DocStyleName.inputValue=='Standard Style'}
#{bindings.DocStyleName.inputValue=='Purchase Order'}
#{bindings.TypeLookupCode.inputValue =='STANDARD'}

All expressions return false