How to append a number to variable name?
Use LateBoundPropertyRef() function... search user's guide for help.
i also feel the need to mention that using Late Binding functions reduces performance. The more and complex, the slower it gets. One or a few are probably no big deal. Use as explicit syntax as possible; the more wildcards and "loose ends" (eg no aspect name given) the more work has to be spent by the system at runtime instead of at save/compile of graphics.