VBA userform validation - multiple textboxes must sum to the value in another textbox

I am trying to add some validation to my userform.

Users are asked to provide a whole number, and then this number is then broken down into different categories.

I want to add some validation in to ensure the sum of the categories adds up to the whole number which is initially entered. Does anyone know how to do this?

Please help!

This is easy, but it depends on your implementation, please attach your workbook

Remember to desensitize the data.

Click on GO ADVANCED and use the paperclip icon to open the upload window.

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