在MSI安装程序中使用自定义操作进行下一步按钮

I am trying to hide or disable the next button from within a custom action. I've searched around for possible ways to do it but all i found was to set a variable in my custom action and set the next button to enable when this variable is equal to a value. I have now found tutorials on hiding the cancel button. I wonder if this same method could be used for the Next button (or any other field for that matter!) but I just don't understand two functions in it. these are MsiCreateRecord() and MsiRecordSetInteger(). Can anyone offer an explanation as to where the link between creating a record with a set number of field, and using this record to hide the Cancel button?I am trying to hide or disable the next button