Trigger on exact time and date

[Alfista]

I need to run trigger on exact time.
I use this expression:

dayofweek()=1 $ time()=080000

but I can't use it while I have this error:

Cannot add trigger
Invalid parameter "/1/expression": incorrect expression starting from "$ time()=080000". [triggers.php:300 → CApiWrapper->__call() → CFrontendApiWrapper->callMethod() → CApiWrapper->callMethod() → CFrontendApiWrapper->callClientMethod() → CLocalApiClient->callMethod() → CTrigger->create() → CTriggerGeneral->validateCreate() → CApiService::exception() in include/classes/api/services/CTriggerGeneral.php:1009]​

Please can you help me and tell me where is the problem?
Thanks

[dimir]

What's that dollar sign there?

[cyber]

This is duplicate thread.. Got several answers in other one..

[Alfista]

Yes, by a mistake it was created twice, but I can't close it or delete.