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# Configure Post-Processing

To configure Lua post-processing tasks, you must specify the number of tasks and task names in the `[PostProcessingTasks]` section of the configuration file, for example:

    [PostProcessingTasks]
    numTasks=2
    task0=checksum
    task1=filterscore

Each task must also have its own section in the configuration file, for example:

    [checksum]
    type=lua
    script=./scripts/checksum.lua
    entities=number/creditcard

You must define a `processmatch` function in your script:

`function processmatch (edkmatch)`

where `edkmatch` is the object to match. This returns a Boolean value; set this to `True` to keep the match, or `False` to discard it.

## Methods and Parameters

The following methods and parameters are available:

- `edkmatch:getEntityName(), edkmatch:setEntityName(new_name)`
- `edkmatch:getOutputText(), edkmatch:setOutputText(new_text)`
- `edkmatch:getMatchedText(), edkmatch:setMatchedText(new_text)`
- `edkmatch:getOffset(), edkmatch:setOffset(new_offset)`
- `edkmatch:getOffsetLength(), edkmatch:setOffsetLength(new_length)`
- `edkmatch:getScore(), edkmatch:setScore(new_score)`
- `edkmatch:getComponentCount()`
- `edkmatch:getComponent(index)`
- `edkcomponent:getName(), edkcomponent:setName(new_name)`
- `edkcomponent:getText(), edkcomponent:setText(new_text)`
- `edkmatch:addComponent(name, offset, offsetLength)`

For more information, see Eduction Lua Methods Reference.

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