Multiple functions at the template

Hello All,

We are trying to get the barcode on the invoice that the barcode reader can read..  Looks like we cannot use multiple functions in BI Publisher Template.. 

Our Invoice will need the barcode field like this

<?format-barcode:trx_number;'code128a';'XMLPBarVendor'?>  (and the font we use is code128a for which we need to also use format-barcode function to call the font etc)

<? xdofx: rpad(TRX_NUMBER,25,'0')?> 

Is there a way can we do this with one field.   

Please any help would greatly appreciated.

Thanks in advance.

Lalitha