Element Input Value with an Hyphen

Summary:

Have an Input value as "Def Period-PY Year1". Would like to know how this Input value can be included in the FF statement against Inputs Are Section?

Tried couple of options such as replacing hyphen with double underscores , quoting as Def_Period_PY_Year1, but none of them seems to work.

DBI in FF window mentions as <Element_Name>_Def_Period_PY_Year1 , however the DBI doesnt retrieve correct value in the calculation FF where it is used. Any pointers will be helpful.

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