Hi SMM,
Thank you for your interest in Syncfusion products.
The text before/after for the merge field can be modified using the FieldCode property which is exposed as public in our latest Version 9.4.0.62. The text followed by “\f” denotes the text after and the text followed by “\b” denotes the text before for a merge field. We have created the sample illustrate your requirement to modify the text before for a merge field. Please do find the sample from the attachment.
Please let us know if you have any other questions.
Regards,
Gunasekaran
Sample_1a51db69.zip