Syntactically this is how I got it to work.

spaceLocator -n temp01_r_armFkA01_loc;
spaceLocator -n temp01_r_armFkA02_loc;
float $locWp1[]=`getAttr ("temp01_r_armFkA01_locShape.worldPosition[0]")`;
float $locWp2[]=`getAttr ("temp01_r_armFkA02_locShape.worldPosition[0]")`;
distanceDimension -sp $locWp1[0] $locWp1[1] $locWp1[2] -ep $locWp2[0] $locWp2[1] $locWp2[2];

But this was no better than the way I was doing it before, like this:


distanceDimension -sp 0 0 0 -ep 0 0 0;
rename |distanceDimension1 "tempFkA01_dd";
spaceLocator -n tempFkA01_loc;
spaceLocator -n tempFkA02_loc;
connectAttr -f tempFkA01_locShape.worldPosition[0] tempFkA01_ddShape.endPoint;
connectAttr -f tempFkA02_locShape.worldPosition[0] tempFkA01_ddShape.startPoint;

I am still looking for the correct way to add dd nodes with mel. How do you do it?

Thank you for your reply,
Ron