passing a string as a variable

Hi All,

I would like to use a string as a variable if this is possible. I've got:

new-pl-lay (as a variable that holds layer name "UGL_PL_NEW")

first-cable (as a string that holds "new-pl-lay")

I'd like set the current layer to "UGL_PL_NEW" by using the first-cable string.

Something like:

(command "_.layer" "m" (read first-cable) "")

Is this possible?

Thanks

John