How to use Animation nodes expression to call numpy.lcm? I am trying to write a blender / Animation nodes to generate Epicycloid but I am getting an error message from the Expressions node.

The imports are math, numpy and the expression is lcm(a,b) but the error message is ufunc 'lcm' d..ype('float64').

I assume "d..ype" is dtype but since I have tried both ints and floats as input and there is no float64 how can I call the numpy function?.

I am on a Windows 10 machine running blender 2.8
You have to change the modules name math to numpy in the advanced node settings of the Expression Node which is located in the N-panel.