Hi guys... I want to paint my terain with grass1, grass2 but are too high for me to use them...I mean grass1,grass2 are TALL....i want to make them shorter... How can i do that ? Thanks.
You need to edit the Min And Max Heights for your grass details (and you might also want to edit the min and max widths accordingly too, so they don't become stretched out of proportion).
For more details, see the grass manual page here, but instead of "Add grass texture", choose to edit your existing grass textures.