TruClient script failed to initialise textbox at start of script

I am using TruClient protocol and it was working fine but suddenly sending:

Error -203256: ** 3: Type LR.getParam("uID"); in UID textbox ** failed - target object was not found

actually this textbox is not detecting and there is no problem with uid and password, here I need to create Hybrid script, it is possible

i will give userid and passsword from ajax or http protocol and rest part is truCliet script, but in vuGen 11.0 I am not getting provision to write hybrid script in truClient

Please let me know how to resolve this issue