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Once again if you would like to learn more about date format strings we use internally visit https://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx .
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Below are the new merge field format options that we have added to our mail merge.
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Image Format: (MERGEFIELD Our_Logo \& "54")
The number in this format type as the example above represents the image scale as a percentage. The number must be between 2 and 1500 inclusive, any more or less than this would cause an error.
For example a number of "43" would scale an image to 43% of its normal size.
Contact Format: (MERGEFIELD ContactsOfType_Client \^ "TFLK)
There are 2 different ways of retrieving the data from contacts.