applying phpthumof directly to an image

hi i can apply phpthumbof to an image placeholder but can’t seem to apply direct to a URL



<img src="[[++base_url]]assets/candidateimages/[[+fullname]]pic.jpg" alt="">


i know with a placeholder it works like the following and i have got this to work no problem

<img src="[[*image4:phpthumbof=`w=980&h=230&zc=1`]]" alt="[[*image4title]]" title="[[*image4title]]" />

for anyone else stuck on this;

<img src="[[phpthumb? &input=`[[++base_url]]assets/candidateimages/[[+modx.user.username]]pic.jpg` &options=`&w=980&h=230&zc=1` &onlysrc=`1`]]" alt="[[*image1title]]" title="[[*image1title]]" usemap="#img1map" />

https://github.com/jaredloman/PHPThumb-Output-Filter#readme