Need help on i-rule to specific uri path

Try below

when HTTP_REQUEST {
	    switch -glob [string tolower [HTTP::uri]] {
	        "/ws/rest/external*" {
            if { [class match [IP::client_addr] equals Boomi_external] } {
		    pool esd-bmapi-dc1-as01-f5.lanl.gov_8077_pool
			} else {
             reject
              }
	        } default {
            drop
	      }
         }
      }