Android Question How to open a file with associated application?

I have customer support App, when customer creates new support ticket, he/she can add attachments to support ticket. Attachments can be images, PDF, Word, Excel files. Now when user is looking at support ticket, he/she will see list of attached file (we show icons). I want to open attached file in associated application (if user has it). e.g. For PDF file, I want to open PDF viewer and file will be seen in it.

How do I achieve it in B4A?

Thanks & regards...
U2005K