Hello'
I have successfully run the onLoad webresource in Case form to get Subject entity's GUID through lookup field---subjectid. Now Subject entity is replaced by a custom entiy, named Category, my purperse is get the Category entity's GUID throught run a webresource when loading Case record. The code as below:
When loading Case form, I have encounter an issue, lookupObjValue always is null. the screen as below
Appreciated for your help!