Linking spin box to parameter using conv-floaty32

I’m trying to connect values from a spin box in my panel to some stepgen values to control on, off, and frequency of the stepgen that runs spark box for edm. I get a error value invalid.

error photo

yes , I've done that and found a comp called conv-float-u32 to convert the float to u32. It doesn't seem to do the job or I'm implementing it wrong. If I comment out the error line and run and read the hal I can see that it does convert to u32 . but I still get the error that the value ' conv-float-u32-0-out ' is invalid for U32

So I setp steplen to a value (500) instead of conv-float-u32.0.out and put that same value (500) into the spinbox. I then ran it and pulled up the HAL and looked at the values. steppen.04.steplen is identical to conv-float-u32.0.out .

So I've tried that and get a error that steplen pin does not exist. Could you give me a example how would you go about connecting a gladevcp spinbox to a spepgen steplen parameter? What I'm trying to do is control the length of the on time on a stepgen to control my mosfet board in my wire edm spark box. And then us velocity to control the frequency in which its happening. The times can be anywhere from 40 milliseconds up. Right now I have a arduino doing that. I'd like to have linuxcnc do it all if possible.