need solution to code

[mccluregamer4472]

I need some help as i am currently learning to code and i have to make a specific piece of code but not understanding it at all at the moment. Basically i have to make a code that creats a batch and components that are in the batch. When the program generates a batch it must create a batch number with the date and order number so "ddmmyyyy9999" and same with components but the components have the batch number which is the "ddmmyyyy9999" but has "-9999" on the end to show how many products there are within the batch. if anyone has any solutions or ideas let me know, thank you