Applicable Ephesoft versions: 4.1 onwards
When you extract a field of checkboxes, you end up with a result of OOOXO or similar. Using this method, you can change that to anything you want without the need for a script.
In 4.1, we introduced Format Conversion (more info). Using the replace function here, we can figure out what RecoStar will provide us and what we want to change it to.
For example, if I have a document with 5 checkboxes, numbered 1 to 5, the possible results that RecoStar would give if only 1 box was checked are as follows:
We can then open Ephesoft, go into the Index field, down to Format conversion and use the following settings:
You will also have to go into the Modules and add the Format Conversion plugin to Automated Validation.
When we get to Validation, rather than having OOOXO we would have a 4 in the field.