Negative - Check whether a number is negative 
		
		This action checks whether a number is smaller than zero.
		 
		 Trigger [required]
		
		<X> (non-repetitive numeric trigger [required]):
		The checked number.
		
		Exits [none required] 
		
		The two exits represent two mutually exclusive possibilities:
		
		<Yes> (non-repetitive numeric exit [not required]): The
		input number (the value of <X>) in case it is negative
		(i.e. smaller than zero).
		
		<No> (non-repetitive numeric exit [not required]): The
		input number (the value of <X>) in case it is not negaive
		(i.e. greater than or equal to zero).
		
		Notice: If there is a need to distinguish between 3 different cases
		(<X> smaller than zero, <X> equal to zero, or
		<X> greater than zero),
		use Compare.
		
		 Usage Examples 
		
		 Test1  (need to complete)