Write data to plc using Linxdde7_2 example

Hello,

I have download the example file Linxdde7_2 for using DDE between
the PLC5 and Access 2000.
It works excellent but there is a problem..
When I run the Macro DDEBLKWRITE only the data from the first Record
is sending to the plc.
Now I want using a button on the form View/edit Process 1 data
and when I have selected a record (example record 4) and click
on this button the data of record 4 must to the plc.
Can anyone tell me the VBA-code for this.
I have included the attached-file.

Greetings,

mulderm