I headed i can edit the jetpck fuel with the latest version of worms (3.29.0),but how??

From the readme:

It is now possible to specify the amount of Jetpack fuel, however currently this can only be done using external scheme editors. The Jetpack "power" setting must be set to 5 + the desired amount of fuel. A setting of 5 (0 fuel) means infinite fuel.

If you need a scheme editor, look here:

http://worms2d.info/Software

Both SchemeWorks and SchemeEddy are very good.

i use schemmeEddy but it doesnt have the jetpck fuel option....i will try the other ones thx

EDIT: nvm....xD