A site published via the Portal does not work correctly. Cross origin object access

thank you for your answer,

we have tried to implement an iRule with this code, but it has no effect and we d'ont see it in the page html source code.

when HTTP_RESPONSE {

HTTP::header insert "Access-Control-Allow-Origin" "*"

}

Should it be visible in it? we see in the statistic that the iRule is executed