how to use tf.variable() in tf session eager mode ?

[mullerhai]

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implicit val session = TestSession.createTestSession(TestSession.Mode.EAGER) // EagerSession.create()
implicit val tf = session.getTF // Ops.create(session).withName("test")
implicit val scope = **tf.scope()*

val weightInputGate = tf.variable(getWeightMatrix(weightGatesDims, scope)) the console error : Op VariableV2 is not valid in eager mode. ,because I need update the weight about weightInputGate,how to do in eagerSession model ,thanks