Assign xml element value and attribute

Hi,
I’m trying to assign xml node attribute and its value from a mapper snap.
Below is the sintex:
$Invoice.cac:AccountingSupplierParty.cac:Party.cbc:EndpointID.@schemeID == “Attribute Value”
$Invoice.cac:AccountingSupplierParty.cac:Party.cbc:EndpointID == “Element Value” >> it seems this line over rights privious line, please see the screenshots:
1:

2:

Can someone please help thanks,
Deepak.