You threw a project without resources (most of it is missing), so nothing works when it starts.
So i didnt find an excact fix for my problem that a sound sources position wouldnt update upon a certain condition but that aint really necessary. What worked for me is initiate (play the sound) all Sound Sources at the beginning of the scene and have one channel per source. Then loop it and put the default value to 0. Next set the postition of all channels to its respective objects in an unconditional event. And last when doing whatever with that object, turn the volume of its channel to 100 every time the condition is met. So now the sound will play depending on the condition and on its spatialised too.