you are trying to write to read only attribute binding
Wrangle has parameter called Attributes To Create, which is by default * therefore all attributes are writable however if name of your @ attribute binding doesn't match the pattern in that parm you can't write to it
this may be case in some VEXpressions on POP nodes where you don't have access to Attributes To Create which is inside and is not including your attribute name in such cases you can force it by using export keyword
you are trying to write to read only attribute binding
Wrangle has parameter called Attributes To Create, which is by default * therefore all attributes are writable however if name of your @ attribute binding doesn't match the pattern in that parm you can't write to it
this may be case in some VEXpressions on POP nodes where you don't have access to Attributes To Create which is inside and is not including your attribute name in such cases you can force it by using export keyword