How to put an L: var in local variable in LUA

Hi, I have a strange problem , please see the lua code below.

varset("L:myVar"..tostring(1),"number",999)

This code work fine ( varget("L:myVar1","number") = 999 ), but the follwing: 

local index = varset("L:index","number",1)

varset("L:myVar"..tostring(index),"number",999)

This code not work. ( varget("L:myVar1","number") = 0 ).

Someone can explain to me what is wrong or what i'm doing bad.

thanks by advance.

Edited February 28, 20197 yr by bokdany