Excel link not update in Microstation

Dear All,

We copy formula to Microstation and when we update something in excel, but in microstation not update , so what happen with this?

We have many Microstation files need to update from excel automatic.

In Microstation, I went to "Edit Menu"==> "Link" and at " Automatic" Radio Button is gray..

So last way, we update all files one by one and take too much boring!