The Engineering Projects

I am trying to convert an Allen Bradley RSL5k program and am stuck on an addressing issue. In AB I have a UDT with a DINT member. I step through the bits of the DINT programatically with the following code

UDT_NAME.MemberDINT.[StepVar] and then I simply cycle through the applicable bits of the DINT by incrementing StepVar.

I need to do the same thing in Unity Pro, but cannot figure out how. Is this possible, if so, how? Please, and thank you very much!
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