Weight Shipping figures

I have tryed this many times now and just cant get it to work. i want to include shipping weights from 250g up to 10kg
i can get the weight shipping to work with 25:10.50 as a test. But it appears to be 25 kg if i add a decimal place E.g 0.25 then the weight shipping module does not appear during the check out. how is 250g supposed to be displayed?

this is what i tryed after reading further info but just hasnt work for me
anyone have any suggestions for me?
00.25:5.50,00.5:10.50,1.00:11.30,4.00:12.90,5.00:13.70

thanks

really need some help anyone?

If you have your default weight class set up as "kg" then it should work with .25

yep checked the settings and its set to kg so wasnt that, but thanks for tip

Ok after a lot of time wasted i have found that I needed to add a comma before i entered in the following
,00.25:5.50,00.5:10.50,1.00:11.30,4.00:12.90,5.00:13.70,10:100,
If i did not use the comma first it didnt work with the different weight ranges

hope this helps someone as it works perfectly now

That does not compute... but I'll look into it

I know but i tryed everything to get it to work and the last thing i tryed was that the comma didnt show after i saved it. But it worked after that fine