midi reset question

Hi all, this might be really simple but I can't figure it out. When I'm controlling one of my vst synths with my midi keyboard and tweaking the filters for example the parameter changes automatically reset themselves when returning to the start of the loop. Is there a setting I need to change somewhere? Simon

[Options] >> Preferences >> Audio >> MIDI Devices: There are three checkboxes for actions on Stop/Play. Uncheck "Reset CC" (and the others, if you wish). But, changing the timeline position can rest things too.

Thanks alot dark star.