How do you implement formula: F = GMm/r^2 - where G ~ 1e-11, M ~ 1e+26, m ~ 1e+2 and r ~ 1e+8 and value changing? What error? Why? It simply formula, that implementation in simply gravity simulator which creates students in 1st year in university) And all works well. I do not see problems in this. In all applications implements setting float number in edit field, but Unreal couldn’t it.