Help Refueling DGIII at ISS

[clay]

I am docked at the ISS and have the fuel hatch open and the Outer and Inner Door open. THe checklist says to then
wait for external fuel pressure to go up. However this never happens, it remains at zero. Can someone tell me what I
am doing wrong? Thanks.

[SWAFO]

Be sure that you have the option engaged to enable refueling at the ISS.

[clay]

where would i be able to enable it if it wasn't, I can't fine anywhere in the launchpad that has an option for this.
Thanks.

[StarLost]

On your desktop (or wherever else you optionally put it) is an icon for DeltaGlider III Configuration. Right beside engine
type (right side) is a checkbox for allowing refuelling. Make sure it is checked.

[canadave]

Isn't that on by default anyway, though?  I forget....if so, there might be something else causing the problem.