Problem in proxy?

Hi experts,

I have a probelm in proxy,i dont have much knowledge in ABAP so i need help,

iam working in File-XI-Proxy senario,now i have to generate inbound proxy for generating inbound proxy.where i can fiind the data coming from file .........Timcard is my Datatype and i have the same name for Message type,

now input-timecard in this i will have data where i have to create a work area for it ......can i do it like this.

for validation can i put input-timecard directly in loop.

Note:Helpful answer will be rewarded.

reagrds,

phani