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To assign an extracted string value

  1. From the Service Interfaces Editor Assignments pane, right-click, then click New Assignment from the popup menu.
  2. From the Assign to drop-down list, click the field to which you want to assign a value.
  3. Do one of the following:
    • From the Field 1/Operand 1 drop-down list, select a field.
    • Type a value into the Field 1/Operand 1 field.
  4. From the Function/Operator drop-down list, click SUBSTRING.
  5. In the Field 2/Operand 2 field, type a number representing the starting position of the extracted string. For example, if you want to extract a string that begins with the third character of the string, type 3.
  6. In the Field 3/Operand 3 field, type a number representing the total length of the extracted string. For example, if you want to start on the third character as in the example above, extracting it and the next 5 characters, type 6.
  7. Click OK.
Note:
  • Fields that are part of an array appear on the Field/Operand drop-down lists with a subscript. The default subscript is the total number of occurrences of the field. To specify a specific occurrence, edit the subscript in the Field/Operand field. If you want to specify all occurrences, type an asterisk (*) as the subscript.
  • Any condition defined for the assignment appears in the Assignment Condition box at the bottom of the Assignment dialog box.
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