Duo_Liang submitted December 16 2018

If you want the signature field to be optional, simply use the following format:


The third character “X” can be either a question mark (?) or an asterisk (*). An asterisk indicates that an Input Field or Signature is required. A question mark indicates that it is optional. 

you can find the document used in the code from this link:


Refer to this document page for more information: https://docs.esignlive.com/content/c_integrator_s_guide/sdk/c_managing_documents/extraction.htm#TextTagExtraction

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