How can i now get the value of pool member and port (iApps)

DebBabu- Pete's answer is great. Just for education, here is an example in pure Tcl without using the iapp package. Keep this reference handy: http://tmml.sourceforge.net/doc/tcl.

[root@big84:Active:Standalone] ~  more example.tcl

set myTable "{{ pool_ip 10.10.1.2 pool_port 443 }} {{ pool_ip 10.10.1.3 pool_port 443 }} {{ pool_ip 10.10.1.4 pool_port 443 }}"
set myIpTag "pool_ip"
set myPortTag "pool_port"

foreach outerGroup $myTable {
    foreach innerGroup $outerGroup {
        array set x $innerGroup
        puts "IP $x($myIpTag) PORT $x($myPortTag)"
    }
}
[root@big84:Active:Standalone] ~  tclsh example.tcl
IP 10.10.1.2 PORT 443
IP 10.10.1.3 PORT 443
IP 10.10.1.4 PORT 443
[root@big84:Active:Standalone] ~