String constructor

[tintinz]

Hello. Thanks for awsome lib!
i have a problem right now. i using message=String("data")+String(123321), and
.send(message);
code:
for(int i=0;i<4;i++){
message = String("BB_")+String(i)+String("_")+String(Sensor[i]);

mySwitch.sendTriState(message);

}

get this error:
no mathching function for call to 'RCSwitch::sendTriSate(String&)'

MORE:
Arduino: 1.5.6-r2 (Windows 8), Board: "Arduino Pro or Pro Mini, ATmega328 (5V, 16 MHz)"

Send_RClib_4_sensors.ino: In function 'void loop()':
Send_RClib_4_sensors:83: error: no matching function for call to 'RCSwitch::sendTriState(String&)'
C:\Program Files (x86)\Arduino\libraries\RCSwitch/RCSwitch.h:72: note: candidates are: void RCSwitch::sendTriState(char*)

Please some advice or solution on this.
Thanks