so you mean you want to control when the flipbook animation plays. Well to do that you need to add IF switch node before plugiing in time of flipbook. A fimiliar switch node is one which swaps the material option that you see on regular shaders (that say 'use color map' and the node that contains A, B True and false an an output) This output could be anything a scaler, a color value or whatever depending on the condition. Now you can plug the 'Time' node in True' of If switch node, and just a regular variable from 0-100 in 'False' input. And enter value of '1' in 'B' input and A material Variable (Checkbox) named 'start' and plug it in 'A' input of switch node . Now when ever you check the Checkbox material varible the flipbook plays, animation and when unchecked it'll stop and you can use the Static variable ranging from (0-100) to drive the animation manually. Hence You can control Both Material Variables In Flow graph logic pretty easily, whatever situation you want to pursue.
