setcookie
//unix timestamp for expiration date
<mvt:assign name="g.expires" value="s.time_t + (60 * 60 * 24 * 5)" /> // 5 days from today
<mvt:assign name="g.cookie_name" value="'mycookie'" />
<mvt:assign name="g.cookie_value" value="'hello world'" />
<mvt:do file="g.module_library_utilities" name="g.null" value="SetCookie(g.Output_Cookies, g.cookie_name, g.cookie_value , g.cookiedomain , g.expires, g.cookiepath, 0 )" />
<mvt:do file="g.module_library_utilities" name="g.null" value="OutputCookies( g.Output_Cookies )" />