%subst as a result.

%subst as a result.

I can't figure out two problems I believe are simply solved by others.

I wish to populate a field with a constant, and center the text.

Lets say we have a field called Title that is 40/alpha.
Lets say we have a constant field of cTitle, with a value of 'Screen Title"

I know how to do this with several lines of code, but I'd like to use %subst

I believe this should work, but it doesn't compile:

  C   eval  %subst(Title:
  C            ((%size(Title) - %size(cTitle) / 2)
  C             = cTitle

This does not compile and I can't see why not.