Hi Luc,
Thank you for contacting Synfusion support.
From the given details, we suspect your requirement is to apply super script property to the particular text (‘er’) after mail merge. Based on the above details, we have prepared the sample which can be downloaded from the following link.
https://www.syncfusion.com/downloads/support/forum/151837/ze/CreateWordSample1536269485
In this sample we have done the following.
1. Loaded the template document.
2. Performed mail merge function using Execute API.
3. Retrieved the text ranges which want to apply superscript property.
4. Saved the word document.
If you think, we misunderstood any of your requirement, please share the complete requirement. So that we will validate and provide the solution earlier.
Please let us know if you have any other questions.
Regards,
Manikandan Ravichandran