what is wrong with my calculate script?

There is a way to trap the field name of the problem field or fields by writing a function that takes as input the field name and returns the field object or a null object and if the field name supplied does not match with a field object it alerts the user to the error.

function GetField(cName) {

var oField = this. getField(cName);

if(oField == null) {

app.alert("Error accessing field named " + cName, 1, 0);

}

return oField;

} // end GetField function;

(function () {

// Get the field values, as numbers

   var oA0 = GetField("A.0");

   var oB0 = GetField("B.0");

   var oC0 = GetField("C.0");

   var oD0 = GetField("D.0");

   var oE0 = GetField("E.0");

   var oF0 = GetField("F.0");

   var oG0 = GetField("G.0");

   var oH0 = etField("H.0");

g

   // Set this field’s value to the sum

   event.value = +oA0.value + =oB0.value + oC0.value + +oD0.value + oE0.value + +oF0.value + +oG0.value + oH0.value ;

})()

I try to stay away from self defining functions until the form has been debugged since this type of function sometimes hides the full error message.

Also I probably would have written a defined function to sum a the values of an array of field names so I could reuse the function to sum any given series of field names.

That error message means you're trying to access a field name which doesn't

exist.