Chance velocity after spawn

Hello, I have created a cube in the level, this should be accelerated with a shot. The principle of a crossbow bolt.
If I set the Procectil acceleration as an initial value, it works. But the Cube move in the moment it spawns. If I set the initial speed to 0 and later increase it, nothing happens. To check that I got the right cube, I also changed the material with the shot. Result: the cube is purple but does not move. Can someone tell me what I’m doing wrong? Thank you very much for your help…

In the image you posted the execution pins of the “Set” and “Set Velocity in Local Space” nodes aren’t connected to anything, therefore they’ll never actually be run. Is that the problem or is that image in error and you are experience some other issue?

Hello, thx for the answer. My last answer is not here? Starnge. So again: The nodes are connected in my little project. But I have delete some stuff thats not needed - So the picture dont show the real state. i think I have other problems. I use a normal actor with a prejectil-movement component. Thats correkt, isn’t it? But If I set se velocity nothing happens. Is it possible to speed up a actor multiple times at all? Thanks for your help!

Hmm I find out, that if the cube is in free fall (without Physik simulation) the cube shoot away. If the cube fall on the floor, or the physik simulation is on - nothing happens… the weight?.. I’ll try something in that direktion.