I'm having trouble with the expression validator not liking the name of my C

I'm having trouble with the expression validator not liking the name of my CDT. I have a cdt that is based off of an xml standard (MISMO if you're curious). Some of the field names start with an underscore and when I try to reference them in the expression editor I get the following error and cannot save the expression. "The character _ could not be recognized in the given context." This is the expression that I'm trying to save. "median(pv!cdtResponse_Group.RESPONSE.RESPONSE_DATA.CREDIT_RESPONSE.CREDIT_SCORE.@attributes._Value)"

Since Appian runs in java and java does not like having an underscore at the start of a variable name, is that why I'm not able to use this expression? I'm still able to view these values if I reference a higher level in the cdt, so I'm guessing there's some Appian magic going on that keeps the names acceptable. If that's the case can I disable the validator? ...

OriginalPostID-66098

OriginalPostID-66098