Problem with the Steering

Hi! i just finished building my bike yesterday for a test drive, and the problem is that when i turn rigth on my control, the bike will turn left and if i turn left on my control, it will go right. i built all the parts right, could it be something wrong right my servo of reciever? i used the MCR-2MC, could it be the reason?

thx for you help.
sorry, i can read chinese but i don't know how to type it.

there should be a steering reverse function in your transmitter

i need to get a control with that function then.
thx for your help!