Update the specified submission

PUT /api/v2/submission/12345.json HTTP/1.1
Host: www.formstack.com
Authorization: Bearer [[app:oauth_token]]
Accept: application/json
Content-Type: application/json

field_12345=Example&field_12346=Answer

curl -X PUT -i -H "Accept: application/json" -H "Content-Type: application/json" -H "Authorization: Bearer [[app:oauth_token]]" -d "field_12345=Example&field_12346=Answer" https://www.formstack.com/api/v2/submission/12345.json

field_x

For this parameter, x must contain the id of the field whose value should be set. For fields with subfields (name, address, etc), use array notation with each item being the subfield and each key being the name of that subfield.

var fields = {
	field_12345: {
  	first: 'John',
    last: 'Smith'
  }
};

var query = "field_12345%5Bfirst%5D=John&field_12345%5Blast%5D=Smith";

File Uploads and Signatures

File uploads can be performed by simply base64 encoding the file data and sending that along as the value in the field_<field id> POST field. The filename can also be sent with the image data in the format "MyFileName.png;<base64 encoded file data for MyFileName.png>"

Signature are handled just like file uploads and are saved in our system as PNG files.