This function sets table object attribute attrName for table object toid to attrval.

If toid or attrName is invalid, the function returns a zero (0). If the function executes successfully, it returns a one (1).

The toid parameter is the table object ID of the table object whose attribute value is to be set. The parameter is a string for the name of the attribute. Note that names are case insensitive. The attrval parameter is the new value for the attribute attrName. Some values are numbers, some are strings. String values are case insensitive.