vba - How can I make sure users can't run my macro after a specific date? -

is there way restrain macro accessibility? want sell macro. give person use it, need make sure not run after ten times of runs or after specific date! forced pay registration. 1 more thing is not excel.

this procedure run 10 times, warned, if vba project reset, run 10 times.

sub runme()    static numberofruns long    if numberofruns < 10     numberofruns = numberofruns + 1     'do stuff needs doing here     debug.print numberofruns   end if  end sub