how to Pass Internal Table to Workflows from Custom Program

Hello all,

I hope you all are doing well.

My query is, I have created a custom upload program that get data from Excel file to Internal table.

Now,

1. After getting data into internal table, I want to execute work flow from program. And i want to pass my internal table data into the work flow.

2. After getting data into workflow containers I have to work on approval process.

Please guide me how can I achieve this.

Please also guide, Which standard function modules I have to use for this process?

Thanks.