problem about whmcs-Collection of common programming errors

• 
  Paul Rusu
  php smarty whmcs
  I have added the function.bnr_exchange.php to the includes/smarty/plugins directory. It contains smarty_function_bnr_exchange which returns a string.I also modified invoicepdf.tpl $pdf->Cell(0,6,{bnr_exchange} . ”,0,1,’L’,’1′);which gives error: unexpected { I tried with “{bnr_exchange}” but then it writes the text {bnr_exchange}If i simply write {bnr_exchange} in the template it says unexpected } in that line. So it doesn’t recognize the plugin “bnr_exchange”. My question is how do I tell w

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