F5's to send the logs to Splunk

Hello, I'm trying to configure F5's to send the logs to Splunk server's.

The scenario is We have a VIP configured on LTM 1 with port 9004(UDP) and splunk servers as backend servers on port 9004.

The Request is to F5's should send the syslogs to the VIP configured on(LTM 1).

Can you please suggest me any deployment guide or any document to configure the F5's to send the logs.

I have tried configuring using below document but i don't see logs on the splunk. https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-external-monitoring-implementations-12-0-0/4.html?sr=56843247