Is it possible to use a .JPEG as a pluggo infopict?

I’ve tried inserting one to no avail but it’s just occurred to me i might be using the wrong code in plugconfig.

The code i’ve tried using is: #C infopict .jpg;

Is there different code for other images, for example: #C infojpg .jpg; or is it solely a .pict thing?

Thanks in advance,
John