Agnes, you can force it to 1 decimal with the format code instead of using set decimals. SEe the difference:

set decimals to 2   && rounds the number to 2 decimals
i=12.80
? TRANSFORM(i,'999999.9')
? TRANSFORM(i,'999999.99')
set decimals to 0   && rounds the number to 0 decimals
i=12.80
? TRANSFORM(i,'999999.9')
? TRANSFORM(i,'999999.99')

>Hi All,
>
>I used TRANSFORM to put a number to a string.
>
>The number ist to decimals. SET DECIMALS is 1
>
>if I do
>

>?TRANSFORM(12.75,'@R 99.99)
>

>
>the result is 12.80
>
>what do I miss?
>
>Agnes