Not able to choose 2.5V LVCMOS standard

Hi,

if I am using VCCIO of 2.5V i want to select the 2.5 V LVTTL/LVCMOS standard when setting the pin properties. But in my dropdown there isn't any of these standards listed. So whats the problem here? In the DS this standard i given, but not in the Quartus ii software .

Any suggestions or solutions?

Regards

Jérôme