[igorius]

I want to change a plugin which has a setting "reading status" which is set to "text".
I want to change this setting to "bool", "boolean", "yes/no".
I tried any of this settings but none works. What is the right thing to get this done?
Here is the relevant thing: (taken from koreader plugin)

{
'name': 'column_status',
'label': 'Reading status column:',
'tooltip': 'A regular “text” column to store the reading status of the\n'
'book, as entered on the book status page (“Finished”,\n'
'“Reading”, “On hold”).',
'type': 'text', (*1)
'sidecar_property': ['summary', 'status'],
}

(*1): Changed 'type': 'text', to 'type': 'bool', and the other above mentioned types.

available_columns = {
'comments': self.get_custom_columns(['comments']),
'datetime': self.get_custom_columns(['datetime']),
'float': self.get_custom_columns(['float']),
'int': self.get_custom_columns(['int']),
'rating': self.get_rating_columns(), # Includes built-in
'text': self.get_custom_columns(['text']),
'bool': self.get_custom_columns(['bool']), (*2)
}

(*2): added this line with the different types as mentioned above.

What types do i have for changing columns? Where is that documented? I didnt find anything in help/plugins or plugin API...