This does go to a problem shiggy because you can't raise the values to a degree. I can make units run at 99999 speed without WEU. Any value and be warped into inane levels by holding SHIFT and then double clicking the area of question
This credit goes to Norgwegian because on a different site, he taught me it
Go into the upper panel where you can also find the "Save Map" "New Map" commands and so on and go to Preferences. Search for a stuff like "Allow Negative values" and check it. That should allow you to obviously use Negative values.
Did anyone miss the fact shift can do the same thing and also break limits? The only loophole in that technique is that it will be set to the closest possible level with each new patch. Sadly, as a result of the patches too, all buffs set to 0 are now eternal.