When using the PERFORM USING statement, multiple operands can be specified provided they are specified as locals within the statement (using AS syntax). If the PERFORM USING references an item that is already declared, then only one such operand is allowed.
class-id a.
method-id m.
01 d2 type System.IDisposable.
perform using d1 as type System.IDisposable = null d2
continue
end-perform.
end method.
end class.