Conditon in smartforms to print an include text

Dear all ,

I am printing a PO which includes a special instructions at the end of PO.

So, there are 8 lines in the special instructions.

In the 7th line there is a text related to warranty.

All the 8 lines are printed in same Text.

Now the requirement is ... in the 7th line i need to print an include text which is being fetched from me22n transaction.

If the include text is initial then the layout should remain as usual . else the include text should be printed in the 7th line.

Remember ,, all the 8 lines are in one text only...

Kindly guide me ,