I'm not sure I understand what you are trying to achieve, but generally:

 

 

"I need to select Upto 5L points within source,"

 

Use a Tester to split with < and >. If your data is a string where the numerically sortable part is combined with other characters, use the @Substring function or a regex (\\d+) to pull out the numeric part.

"I have fields like Object ID and ID both are same and those starts with numeric 1."

 

If needed, use these IDs with a Sorter and/or the Group By function.

"Note: should select from one side"

 

Use a Sorter on the X coordinate to read and manipulate the features in the desired order.

Hope this helps, otherwise you might need to describe more closely your type of data and the desired output. :-)

 

 

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