Example Thumbnail Element Usage:
To add a file to the Thumbnail element, click the Add File button. Upload File action, which is in the function of uploading a file, should be added with +Add Action in the element.
Click OnClick→ Device→ Upload File to add the Upload File action.
Then add the SetValueOf action. To add the Set Value Of system action, select Onclick→ UIControl→SetValueOf.
After creating the SetValueOf action, select the Thumbnail element from the pop-up window in the action.
After selecting the Thumbnail element, it comes with the value parameter. Click Symbol Picker to fill the value parameter.
Select Action Results→ Upload File →Data.
Then preview the application by clicking the Run button. When the button is clicked, a screen will open for uploading files from your device. You can select either PDF or image file from there. The file you selected as PDF will be displayed with the PDF icon, while the added image file preview will also be displayed.
