Custom variable are not updating in log_link_visit_action Table


I’m trying to use custom variables in piwik for my website. When I set custom variable it does only update value in “piwik_log_visit” table. But not update custom value in “piwik_log_link_visit_action” table also don’t show the result under Vsitor->Custom Variable nav.

Please anybody know what is issue why custom variables not updating in “piwik_log_link_visit_action” table.