applying two fonts for a single word

Question

hi... 

i have one crystal report with the following requirment ...

suppose consider a word "Hindi(??????)good" consider that as a full word

now what we can do is we can apply Arial Font for Whole word based on condition it should change the font..

 like if(text = '(' )

then font = mangal upto this ')'

else Arial ... 

but how to write formula .. i dont know .. help me