As Murphy knows, sooner or later lcRgb6 will actually be RGB3

lcRgb6="RGB(1,2,3,4,5,6)"
dimension a[6]
a=0
for i=2 to getwordcount(m.lcRgb6, "(),")
   a[i]=val(getwordnum(m.lcRgb6, i, "(),"))
ENDFOR
DISPLAY MEMORY LIKE a

if really only a string "RGB(x,y,z)" is needed and the val() above is not needed *and* lcRGB6 is always well formed,

lcRGB1 = Alltrim(Left(m.lcRGB6, at(m.lcRGB6, ",", 3)-1) + ")" )
lcRGB2 = "RGB(" + Alltrim(Subst(m.lcRGB6, at(m.lcRGB6, ",", 3)+1) )

should work faster...