FactoryTalk View SE digital alarm on a tag in Kepware OPC

Hello dear experts!
Please advice me how to generate a digital alarm in FT VIEW SE A&E by one bit from a tag in KepwareOPC where this tag is a word of Data Block in S7-300 Simatic PLC? I have approx. 800 tags WORD type in Kepware and each bit in these words must generate an alarm in FT. I don't want to create 12800 bit tags in kepware. When I access to Control Logix plc I can create an alarm with address tag.n, where n is a bit number. But in Kepware and S7-300 it' s impossible.
Best Regards, Oleksandr.

I also tried to use in A&E alarm input tag a mask for example [kep_opc]wtag & 4 to generate an alarm when bit 2 = true in word tag, but it doesn't work.
Maybe someone know can I use a mask in A&E alarm input tag definition?