tyflow request

hi. i want to do some effect but there is no any solutions on the web. 1) i have cylinder - verticies grid. its my hidden animated(wave ripple etc) control geometry — «volume1». 2) on this grid i have tyflow particles spread only on verticies(cylinder’s) and constraint to them(object bind — lock to surface) 3) i have hidden cube-brick (animated moving and animated deformations) moves through particles — «volume2» I want my tyflow particles change material id in this moving brick volume2. i attached exa