We are experiencing a similar issue. Is the property on your drawing of type "yes/no"?
The suggestion from our VAR was to change the property on the drawing to type text. Apparently EPDM's storage of 0 and 1 does not correspond to the "yes/no" property type in SolidWorks.
We are waiting for more details but currently that was the suggestion given.
Anyone know if this can be done in 2016?
Make an alias list where Display Value 0 returns alias No, 1 returns yes
Make a variable drop down box on your data card. Special Value = Alias list (Let's say variable name "YepNope")
Make on edit box on your data card have an input formula of $Token("YepNope,1,|) (Variable name "Answer"
Map "Answer" to drawings custom properties and place the "PRPSHEET:Answer" text on your drawing.