can u alter a sess variable twice in the same page?

alter a session variable twice

[Mihai]

in a project i have a session variable which i always reset in header and if needed i put a value after.

in FF works in IE 7 work's on login page not in another (both are combined with AJAX but in second case the re-assigining does not work despite is shown on echo in browser it's not written in php session file);

[Sekka]

You can change a session variable as many times as you like on the same page and also use it on said page.