Logic test in BIP

Hi all,

Has anyone come across a situation where the logic of a statement in RTF files does not work?

I'm trying to do:

  <?if:((a='value') and (b='value')) or ((a='value3') and (b='value4'))?>

to display a paragraph or not.  I've also tried the following:

  <?if:(a='value' and b='value') or (a='value3' and b='value4')?>

which produces the same error.

The above causes an error of 'file does not begin with %pdf' when trying to display in PDF format.

When I do this:

  <?if:(a='value') and (b='value') or (a='value3') and (b='value4')?>