Hello,

I am looking for a way of creating a dynamic symbolic i/o field to show and be able to select files that are placed inside a folder on the HMI PC. As the number of files inside the folder changes it needs to be dynamic (200+ PDF files). I am currently thinking

1. Use VBS script to find all files in a folder
2. Populate a drop down menu

I am having trouble with populating a drop down menu, i was expecting that i can add items through the visual basic script but for the life of me (and through several google searches) i cant just add items through VBS script. I may be "thinking" or looking at this the wrong way. I though it would be just something along the lines of 

'----------------------------------------------------Code-Pseudo

Dim ObjScreenItem

Set ObjScreenItem=HmiRuntime.ActiveScreen.ScreenItems("DropDown")

ObjScreenItem.dataSet.add("FILENAME1")....etc

---------------------------------------------------------

How do i actually access the drop down list through a script??

Regards,

Alec

Hi Alec,

you can create a text list where you use tags instead of text-entries, e.g.:

value  entry

0      <tag exampletag0>

1      <tag exampletag1>

...

 With a VBScript you can write a description to the string-tags exampletag0, exampletag1. This texts are then shown in the textlist.

 Additionally the value of the selected text-entry is written to the process tag which is linked to the symbolic IO field.

Regards,

Frink