iControlREST - adding members to a pool

Just supply the name attribute with the post, not the fullpath. Here's my advanced rest client URL and payload:

https://ltm3.test.local/mgmt/tm/gtm/pool/a/gslb_pool_1/members
POST {"name":"/Common/ltm3.test.local:/Common/testvip"}

With results:

{
"kind": "tm:gtm:pool:a:members:membersstate"
"name": "testvip"
"partition": "Common"
"subPath": "ltm3.test.local:/Common"
"fullPath": "/Common/ltm3.test.local:/Common/testvip"
"generation": 1314
"selfLink": "https://localhost/mgmt/tm/gtm/pool/a/gslb_pool_1/members/~Common~ltm3.test.local:~Common~testvip?ver=12.1.0"
"enabled": true
"limitMaxBps": 0
"limitMaxBpsStatus": "disabled"
"limitMaxConnections": 0
"limitMaxConnectionsStatus": "disabled"
"limitMaxPps": 0
"limitMaxPpsStatus": "disabled"
"memberOrder": 0
"monitor": "default"
"ratio": 1
}