Measure to count transactions between date fields

Hi

I need to create a new measure which can be used to show a count of business that has been cancelled before it has been taken up but after it as been agreed. I have the following fields which I need to use:

Policy Transaction Count (this will show a count of cancellations)

Accepted Date (this represents the date business was agreed)

Inception Date (this represents the date business was due to start)

I need the measure to show something like:

NTU = CALCULATE([POLICY_TRANSACTION_COUNT] IF IT OCCURS AFTER [ACCEPTED_DATE] AND PRIOR TO [INCEPTION DATE]

I keep finding that only one of the date fields will be displayed in the measure despite the fact they are contained in different tables...

Thanks in advance!