S7 1200 function block

I have created a function block in TIA Portal for an S7 1200 PLC and I have the following issue. A boolean input to the block is true but the status of the code inside is false!!The monitored status inside the block doesn't reflect the inputs. Has anybody else noticed this or had the same problem? I am using a unique instance DB for each instance of the fb. Any body have any ideas?

monitor the db for the instance your looking at. The monitor will be showing the last scanned instance

Hi again according to this you cannot set a call up path to monitor a particular FB instance as per Step 7 when using S7-1200.

If your developing it maybe easier to copy your FB to a different number and monitor it as a stand alone block wit
h only 1 call

https://www.automation.siemens.com/...tID=494805&Language=en&onlyInternet=False#top

Are you 100% sure that you have the inputs correctly configured?