Hey, couple of things:
- You just have to connect the set array call to the map for node, e.g. by setting a dummy value (see below)
- You don’t have to calculate the current interation yourself, there is a node for it already
- You can always just pop down a custom hlsl node and write the for loop yourself. You can get the hlsl version of the data interface functions by right-clicking on the data interface pin and then go to “Data Interface Function HLSL…”