Help referencing strconstant

Hello all,

I'm trying to reference a strconstant and can't get it to work. I must be missing something simple. Outside of my function I have:

StrConstant SRON_1 = "0x4477aa;"
StrConstant SRON_2 = "0x4477aa; 0xcc6677;"
StrConstant SRON_3 = "0x4477aa; 0xddcc77; 0xcc6677;"
StrConstant SRON_4 = "0x4477aa; 0x117733; 0xddcc77; 0xcc6677;"
//snip

and so on.

In my function I want to pick one of these palette lists to use and then go on to pick and calculate a colour.

//snip
String palettepick= "SRON_" + num2str(cond)
SVAR pal= palettepick
//then in a loop lower down
color=str2num(StringFromList(i-1,pal))

I then calculate the 16 bit RGB from the hex color. The code all runs except that it just takes the last StrConstant in the list, i.e. even though cond=2 it will take SRON_12. So the `SVAR pal= palettepick` seems to not work the way I think it should. I've searched the help etc. and couldn't find a solution. Is it possible to determine this programmatically or do StrConstants have to be addressed by the user?
I don't think that is a valid way to access a constant. That is, you can't form a constant name using a string variable.

Something like this will work...

StrConstant sC1 = "constant_1"
StrConstant sC2 = "constant_2"
StrConstant sC3 = "constant_3"

Function TestConstant(vIndex)
Variable vIndex
String sCon

if( vIndex == 1 )
sCon = sC1
elseif( vIndex == 2)
sCon = sC2
elseif( vIndex == 3)
sCon = sC3
endif

print sCon
End