Help with a measure

[Syndicate_Admin]

Hi guys, I'm a big newbie to Power BI, and I need help with a measure:

I need to subtract 2 measures, if the result it gives me is less than or equal to zero I need it to return 0, if the date is earlier than today's date I need to return zero, and if it is not fulfilled that I return the result of difference. If someone can help me, I would appreciate it.

Thanks a lot

[Syndicate_Admin]

Thanks for the answer but it has not worked for me gives me the following error:

Thank you

[johncolley]

You're missing a closing bracket on line 5.

[johncolley]

Hi,

Subtract = 

VAR _ameasure = SELECTEDVALUE(A value)
VAR _bmeasure = SELECTEDVALUE(B value)
VAR _date = SELECTEDVALUE(date)
VAR _result = IF(_ameausre - _bmeasure <= 0, 0, IF(_date < TODAY(), 0, _ameasure - _bmeasure))

RETURN

_result

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