how to set 2 value using iwextattr

System

hi.

My metadata capture (datacapture.cfg) having a list of checkbox to set the different values of metadata. Using the GUI, the user are able to set different values but using CLT / IPL, they are not able to set/ update more then one value. if they do using the iwextattr -s, it replce the existing value and set only one value.

my req is to set more then one value using the CLT. how can i do that....?

Thanks in advance....