I'm building an Excel model in which I would like to add a function in VBA that prevents a macro from being executed if the value in a cell is in text format. Let's say that the user should fill out a number in a cell, but by mistake fills in a word or just some letters. I would like this to make a messagebox appear that requests the user to check that cell. At the moment I have an IF-statement that prevents the macro if the value is zero, but I would need this addition to "stop" the model if a cell containes text... Could someone help me please? Thanx...