New Post: M Values for points or lines

I am really stuck. I have been able to create a point Shape File With X, Y, and Z Values I cannot get it to keep the M Values I am setting. Afetr creating the Shape File, I open it inside of ArcMap. It says it has Z and M but neither show up when editing. it return "NaN" for the M Value

I get the same for a multiline Shape, (I think this is how you make a polyline) except it also return a "NaN" for the Z value even though I set it.

I use the same set of coordinate points to create the line as well as the Point shape files.