how to use loop event in the form to take multiple data from VBCS page

Summary:

how can i implement a loop event in process form like i have taken a table with 10 columns and i want to capture data from VBCS page which has multiple number of rows we don't know how many but i need to capture all the rows in the form

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left side i have created a object array(allocation lines) right side is the table in the from.