Dropboxplugin_2.0 and Virtuemart 2.

[fandac]

I installed the Dropboxplugin_2.0 & com_dropbox_2.0 in my Joomla 2, with Virtuemart 2, everiting work very well, but by the compenent it;s working with a plug-in code,: {dropbox}1{/dropbox} , I will like use this code by the virtuelmart 2.0 payment step and product information step.
Could you please help me with this isseu, thank you in advanced.