Create decimal for Line no

Hi Everyone,

I wrote business function to write media object text using API function. My issue is when passing line number as Single digit (say 1) it's storing in the Media object file (F00165) as 1 instead of 1.000 (with 3 decimals) but the SO line no is created with 3 decimals and for that reason the media object is not tied to the line.

Scenario

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SO Detail - F4211

Company  Order No   Order type  Line no

00001        1111          SO             1.000

Media object - F00165

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GT4211A   1111|SO|00001|1

How can I convert the data in the business function to store with 3 decimals.

Thanks

SM