Question: 2d Math - Numerical integer with index

HI,

 

at first I have to admit, that I'm totaly new to maple and have only few experience with the programm.

 

That's the problem. I've got an old maple-code which I want to rewrite in the 2d-Math-syntax. In the code there are a lot of variables of the type "numerical integer" with a form like

"rho_a"

"N_A"

....

--> with index in the name

It's a code for a physical-/chemical- process so the index in the name of the variable is important. But at the moment I add an index for the variable, the type is changed from "numerical integer" to "table". Is there any possibility to hard-define the variable as an "numerical integer" that it will not be changed?

thanks a lot!

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