$mech->click_button( id => 'St' ); #didn't work
$mech->click( id => 'St' ); #didn't work
$mech->click({ xpath => '//*[@name="user"]' }); # WORKED ! BUT clicked the first one not the second
$mech->click({ xpath => '//*[@id="St"]',synchronize => 0}); #didn't work
$mech->eval_in_page('document.getElementById("St").checked = checked;'); #didn't work
$mech->submit_form(
with_fields => {
user => 'St',
},
); #didn't work