First off, you don't need the Fx_Update() line. Resize is not a layer fx function. So you can remove that.
I suspect that it doesn't work because you are doing floating point division and storing the value to an int. try doing something like this.
double setX = 70 * played;
int setX = Integer(70 * played);
the point of all this being, that i don't think maki will convert the type for you. Consider it like typecasting in c++. int setx = (int)(70*played), its just that maki uses a function call (system.integer(double d)) to do the same thing.
But like will fisher said, SetXmlParam might be a better choice, It really depends on you and how you want to do this and what you want to do with it latter. To me they both have good and bad points.