How to correlate and if correlate than how we can check value is passing or not in gatling

Gatling (Open-Source)
1

Hi,

I have done correlation by seeing youtube, How I know the value is passing or not in Gatling if it is passing where can I see that passing value?

I have done the correlation script

exec(http(“request_0”)
.get(uri4 + “?id=GTM-PK7R2G”)
.headers(headers_0)
.check(regex(""").find.saveAs(“c_viewstate”))
.check(status.is(404)))
.pause(9)
.exec(http(“request_1”)
.get("/index.aspx")
.headers(headers_1)
.resources(http(“request_2”)
.get(uri4 + “?id=GTM-PK7R2G”)
.headers(headers_0)

.check(status.is(404))))
.pause(19)
// Login
.exec(http(“request_3”)
.post("/index.aspx")
.headers(headers_3)
.formParam("__EVENTTARGET", “”)
.formParam("__EVENTARGUMENT", “”)
.formParam("__VIEWSTATE", “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”)
.formParam("__VIEWSTATEGENERATOR", “90059987”)
.formParam("__EVENTVALIDATION", “/wEdABD0IESPDNfq1QgCeFkto4Jv7e6YA6Q0MUfZkKOBcuWwrpdmr9WsHKln2oK5gOJfDRzFq9z74l3ESW5sifKJiQaHG85SyN/6m69AITk8yxP3h3nmx4UkkvGuoOXYlQRWmSbXoAP+la+l2+BboA4+JZ3jWCDHSRSbFBTvlV4hr1tTiJmZLoQlVBuEucgK0MlrMYHALqoT76JiiwIvuXYaqubF/WRO/nFX4cBe8aQ9c1GTK2hc4BJmTb1cs2O7x2epfIdcxF48k0YQXQQLzKCr7t/4NAGrd/5/tkkHXnv/HHeGigDLujl7UFcCWU3iSvFwgJoITjg66Xu0LnxLff2NOY+tiawTo5rxc5+y889S8bA8z6D2R7cOtDN4FSecW52Y3A8=”)
.formParam(“ctl00$BrowserChecker1”, “1”)