Dynamically alter texture filter

Development Programming & Scripting Blueprint
1

Hi,

I have a video texture whose saturation I’d like to alter dynamically. Here is a picture of the setup of the material:

Screen Shot 2016-03-26 at 12.02.51.png
Screen Shot 2016-03-26 at 12.02.51.png707×198 43.2 KB

Is there a way to access the ‘fraction’ part of the desaturation filter so that saturation can be dynamically adjusted in Blueprint?

Thanks!

LS