I agree, but I can use with the source (alias).
For example:
My report expression is 'Priority', and he giving the data of 'send.priority' cursor.
I want a way to add code something like this in the 'Print When':

 cpriority=send.priority.value
do case
case cpriority='E' this.fontbold=.t.
case cpriority='R' this.fontbold=.f.,this.fontitalic=.t.
case cpriority='O' this.fontsize=9
otherwise
this.fontsize=18
endcase