MID in WPS on Windows FAQ

Last updated:July 23, 2026

When using MID, the most common questions focus on parameters, unexpected results, and formula combinations; here are 3 common answers for quick troubleshooting.

FAQ

What should I check first if MID returns an error?

  1. Check whether the formula has complete parentheses, commas, and the correct number of parameters.
  2. Check whether the first parameter is a valid text value or field reference.
  3. Verify that the start position and extraction length are correct.
  4. If the issue continues, simplify the formula and test the parameters one by one.

Can MID be combined with other functions?

  1. Yes. You can use the MID result as input for other functions.
  2. For logic-based processing, combine MID with functions such as IF and AND.
  3. Confirm that MID returns the expected result on its own before nesting it further.

Does MID update automatically after data import?

  1. After the formula field is saved, it recalculates automatically when record content changes.
  2. After importing new records, check whether the formula field already shows results.
  3. If the expected content does not appear, check whether the imported field format matches the formula reference.

Glossary

TermDefinition
MIDA text function that extracts a specified number of characters from the middle of a string.
Formula fieldA field type in a multi-dimensional table that calculates results automatically with a formula.
Start positionThe position number where MID begins extracting text.
Extraction lengthThe number of characters that MID returns.