Report...My 4th round of testing.
I use Hammerskin1.04a (no addtional features, joelw135, you do have some extra features in that skin, right).
Total number of variable used before in Hammerskin1.04a : 19
Change 10 --> 51 and 24 --> 52
Add var53 -
var100(
48 new var) and tested with addvar code
It looked fine, the number is up 750 and going.....
Total number of variables:
67 --> it is over 34....
Wichtel: While you are sleeping, 48 new variables possible for you to use..

Edit: One wired thing, in my device, the var86 start at "8" even I put "initvar,var86,0"....

Edit: Ok, looks like var86 - var95 were bad when the number went up. See 2nd screenshot. I am not sure they are safe to be used.