selection of particular displayed Elements.

hi,

i want to select the displayed elements of special config & want to store that data in one variable then i want to check in control structure condition that the selected element are of  that special config.

for that i had written some code but the problem occurring is that  while selecting the elements the code is selecting the all displayed & non-displayed elements 

and want to know the code line how to evaluate the selected config elements.

# code

hm_createmark elements 1 'by config type' 'tria3 quad4'  

set 2D [hm_getmark elements 2]

####
 

want to know the code line which an evaluate that the defined variable is having tria & quad elements.

please let me know if any one is having any sort of solution.