Some CAD systems keep a history of operations, so if you draw a sketch with a circle and radial line, then you make a hole in the solid at the intersection, the hole will move if you change the dimension of the circle.  SpaceClaim doesn't do that.

You need the circle and radial line to make the hole, but after you have made the hole, hide the line and circle (the Curves folder) if you need it later.

If you need a spark to move the hole, select the hole face (not the circle or point) and use the Move tool as shown in the silent video and when the box pops up to enter the dimension, click on the P and you will get a Group name with that dimension that can move the hole.