TCP/IP simulink-labview communicate Problem

This is my TCP Client.

This is my TCP Server.

This is my Stream Output Setting.

This is my Stream Input Setting.

I can send data from Simulink which the data type is double to Labview which the data type is String ,but My problem is that I can't Receive data from Labview which the data type is String to Simulink which the data type is double.

我可以從Simulink傳資料(資料型態：double)給Labview(資料型態：String)，但Simulink(資料型態：double) 無法接收到Labview(資料型態：String) 傳的資料。