I have a checkbox in my spreadsheet that is checked if my product is being put on a skid. When the checkbox is selected it controls a formula that determines how much time is added to the job based on whether or not it is skidded. However, if the length of my part is greater than 144" I would like to have the checkbox forced to be unchecked as we do not make skids larger than 144". When the part is 144" or shorter it should be optional to skid or not. Is there an easy way to do this?