For...Next loop Steps DEC questions

[Archangel]

Anyone,
Can you create a decimal step for the FOR....NEXT LOOP?
How about a Variable step?

Ex:

D VAR BYTE
D = VALUE/10
FOR value = 0 to 12 STEP + D

or....
For value = 0 to 12 step + .1
I realize I am dealing with decimal values....can I use DEC3 command or somthing else to make this work?

thanks

Variable step . . .

myVar Var byte ' up to 255 counts stored here
If PortA.0 = 1 then myVar=12

FOR value = 0 to myVar STEP + D

or something to that effect . . .