please help - Create ping check based on discovered item prototype

[zar]

Hello guys,

I would like to create an item prototype of ping check, based on another item prototype of the same discovery.
The monitoring is a Cisco WLC 5500, with some APs. I already got ip address of each AP by discovery, and now I want to create a prototype to ping them based on discovered address.
Is there a way to refer a item prototype inside another? Macro?

1.3.6.1.4.1.14179.2.2.1.1.19{#SNMPINDEX} and key bsnApIpAddress[{#SNMPVALUE}]

 snmpwalk -v 2c -c public 10.202.55.5 1.3.6.1.4.1.14179.2.2.1.1.19
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.93.254.224 = IpAddress: 10.202.55.136
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.93.255.240 = IpAddress: 10.202.55.244
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.164.0.176 = IpAddress: 10.202.55.220
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.164.2.96 = IpAddress: 10.202.55.129
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.164.4.240 = IpAddress: 10.202.55.125
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.222.248.0 = IpAddress: 10.202.55.112
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.222.248.144 = IpAddress: 10.202.55.223
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.222.253.32 = IpAddress: 10.202.55.124
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.223.2.208 = IpAddress: 10.202.55.202
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.223.4.0 = IpAddress: 10.202.55.139
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.223.4.128 = IpAddress: 10.202.55.233
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.223.4.144 = IpAddress: 10.202.55.126
iso.3.6.1.4.1.14179.2.2.1.1.19.196.10.203.223.5.144 = IpAddress: 10.202.55.246
.........................many.......))

[zar]

help pls...