Hi Jeff,
As per my understanding, you just want to capture a value from user provided as part of @prompt but no filters to be applied.
For doing this you need not create any conditional object, normal dimension object with @prompt function as its definition should be sufficient for you. @Prompt('Enter Fiscal Year Period (e.g. 1 for July):','N',{'1','2','3','4','5','6','7','8','9','10','11','12'},Mono,,Persistent,,User:0)
Basically prompt will be in the select clause not in the where clause.
Here is the sample e-fashion query
SELECT
Agg_yr_qt_rn_st_ln_ca_sr.Yr,
@prompt('Enter values for Year:','A','Time period\Year',Mono,Free,Persistent,,User:0)
FROM
Agg_yr_qt_rn_st_ln_ca_sr
Let me know if you are looking for something else