Upward Limit on inline rolls?

Is there an upward limit on inline rolls?  I'm messing around with the 3.5 roll template and sometimes it returns unevaluated expressions.  I have a lot of attributes that are tried to my characters levels so that I only need to change as few things as possible.  This problem seemed to get solved once I removed some of the expressions and hard coded the values.

A way to avoid that is to make sure you leave a space in between the inline roll brackets and the expression. i.e. [[ 1d20+ [[ 1d8+1d6 ]] ]] Without the spaces it will work only up to a point as you saw. For some reason the spaces prevent the breaking.

Ok thanks, I'll give that a try!