How can I edit cash values ?

I've been diggin around the files and haven't been able to locate where the values for say the money clip, envelop or cash rewards for quests are. If anyone could point them out and offer tips, I'd appreciate it.

The value is part of the item properties. Either the wallet/envelope/clip is created as a map item, then the value is set there. Or the item is spawned dynamically via python, then you have to use the SetValue() command in the spawning function.
You can also create it as a map item, and later use the SetValue() function later to dynamically change its contents, possibly due to the character's haggling skill, or standing with the npc who gives the item.

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Sounds like I'd have to learn and then use a map editor, too much work for now, was hoping it would be a simple notebook edit. Thanks much Malkav, you are very helpfull...as always.

It's actually not that difficult. The vpk-tools map tool is basically a (very primitive) text editor. If you have a specific thing in mind, send me a pm, and I will tell you how to do it. Probably you don't even need to edit a map file, because it's easier to do it dynamically via Python.

Taming the giant reptile isn't everybody's cup of 0 negative, but I quite like it

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I'll pm you..thanks.