I'm having trouble pasting data to a SHA1 site

Calculate_Client_Security_Hash.zip (3.1 MB)
My guess is that the data wasn’t copied properly, so I got a NULL value. What should I do?
I’ll show you the project in .ZIP



dt_WorkItems has no data row.
Please check if the arguments are mapped correctly from Main to GetTransactionData


I almost done with my work flow and has the following observations in Assignment 1.
It login to ACME and extracted data and SHA1 site opened. But
no record has been processed.

Can some one help me to solve this and where I am wrong.