FILTER NUMBERS IN A DATATABLE

Hello I want to filter numbers in a table by basans on this https://snippet.webix.com/xjn8wsfv
It turns out that it works when I use the signs ‘<=’ or ‘=>’ but does not work when I use ‘=’ or ‘>’ or ‘<’.
How can I fix it help me please

Please check the snippet: https://snippet.webix.com/bzww4bct
The original solution has to be extended with the _greater, _lesser and _equal methods as well.
Although they exist in the original filter (i.e. you can just copy them from the source code of numberFilter), all methods which start with _ are obfuscated in the production version of the script (webix.js) and can be called only from the debug version of the library, so please avoid using them.

Hello, Thank you again for your availability. I ran the tests based on the example of your answer, and everything works fine when I manually insert a data array into the data (data: []) option. However when I call a json file containing this array the filter works more for the signs:> and <.
Thank you for helping me solve this problem.