There's no way to help if you don't post your code, and the exact and complete error you get.
#Mat-Dialog Iterate Array
paper wagon
dense hatch
@paper wagon i update my codes
paper wagon
Post the exact and complete error message you get.
dense hatch
serialNumber: undentified this is the complete error i got
paper wagon
No, that doesn't look at all like a complete and exact error message. Error messages don't use unexisting words like "undentified", and they refer to a specific line of code.