Why is it none of my code works? Every form I attempt gives me the error: -> lisp value has no coercion to VARIANT with this type: "MyDimStyle" But that DimStyle definitely exists and can betreived with ( vlax-item ... ). Here's the fragment I thought would work: ( vlax-put-property ( vla-get-activedocument ( vlax-get-acad-object ) ) 'ActiveDimStyle "MyDimStyle" ) Thanks!