FAQ: I set a selection column from a linked table in the filter, but the selection is not displayed.
## Answer
Depending on the relationship of the 「Link」 tables and the link format, the options may not be displayed.
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## Overview
Pleasanter can also use columns from linked tables as filters, but in the following cases, the options will not be displayed, so please use the workaround procedure to display them.

### 1. When specifying a column linked to a table two or more levels away as a filter
In the configuration shown above, if you set the filter for "Table 1" to ClassB for "Table 3", the options will not be displayed.
≪Workaround≫
Enable "「Use Search Function」" in ClassB for "Table 3".
### 1. When specifying a column linked to a table two or more levels away in JSON format as a filter
In the configuration shown above, if you set the filter for "Table 1" to ClassC for "Table 4", the options will not be displayed.
If you specify a "「Display Format」" or set "「Filter」" or "「Lookup」" (links set in JSON format), options will not be displayed even if you enable "「Use Search Function」".
≪Workaround≫
Change the option settings in JSON format to link settings in double square brackets.
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