Need one edit to be made to a Wordpress plugin - Budget: $100 - Hiring Today

Hey there, I've written a Wordpress plugin which allows a user to select a dynamic variation of weight - The customer can enter a set of weights and each weight will have its own set of validation. Example: Admin enters weights 100g, 300g, 500g and sets tags for products which will be available to these weights. Once a user selects either of these weights, a customer will only be able to chose a set amount of products. Example: 100g = 10 products, 300g = 30 etc. The admin should be able to set a dynamic value to weight so it can be anything and also a dynamic limit of validation for each variation. This plugin is already working like this, however I require changes to the functionality. Your job will be to understand the code already written and add to it with the requirements I set. I'll send an example of this working live to potential candidates New functionality 1) When a user chooses a weight instead of listing each tagged product, the tagged products should appear in a multiselect dropdown. 2) This multi select should be validated against the limit the admin enters which will validate a max number of selections in the multi select. 3) You will have to create a pull request with your changes which will be code analyzed by me to ensure quality code. 4) This will have to be tested by me and my client and once happy we'll be happy to go ahead with it. BUDGET: $100