UDF link field with dynamic run time URL

Hi All,

I want to if there is a way to create a field in SAP so we can have dynamic URL. For example I can create a static URL with a link field like "www.google.com" however what I want is pass a active window parameter like customer code to the URL "www.google.com/customer1".

Is there any way to use FS or any other means to achieve this?

Thanks