How to used special symbol in Property transfer definition

Hi,

We have established communication for interfacing 3rd party OPC server to 800xA. All tags uploaded and real values updating in Control COnnection aspect.

But for moving this value to control module we use Property transfer definition, in which it shows invalid expression as the OPC item id contains spcl character.

Is there any way to overcome this?.

BR,

Prabhakaran D