function ValidateData() {

//Submission variable
var CanSubmit = false;

//Check to make sure that the worksheet title field is not empty.
CanSubmit = ForceEntry("WorksheetTitle", "Please enter a title for the worksheet.");
if (!CanSubmit) return;

// check numeric entries are numeric 
CanSubmit = ForceNumber("QuestionCount", "Number of questions");
if (!CanSubmit) return;

//Check a range has been entered for: range
CanSubmit = ForceRange("Range", "Number range");
if (!CanSubmit) return;

//Check a range has been entered for: multiplier
CanSubmit = ForceRange("Multiplier", "Multiplier");
if (!CanSubmit) return;

//Check a range has been entered for: sets
CanSubmit = ForceRange("Sets", "Number of sets");
if (!CanSubmit) return;

//If fields have been entered correctly, submit the form
if (CanSubmit) document.LayoutAddPictures.submit();

} //end function