how do i integrate Nexpose vulnerability tool with ASM module.

InsightVM works with an SIEM product, such as Splunk. You can send your F5 ASM logs to Splunk (F5 integrates nicely with Splunk) and then integrate InsightVM with Splunk to get a nice view of attacks blocked (and/or detected) by ASM.

F5 ASM integrates with another Rapid7 product - AppSpider, you can import AppSpider vulnerability scans into your F5 ASM policy providing instant protection of discovered vulnerabilities:

https://www.rapid7.com/partners/technology-partners/f5/big-ip-application-security-manager--appspider/