I think this is the normal floating point internal storage problem. That little '...' line just before the 'v20=' line means that the values are changing in other code. If you change your store 0 to be store 5.23, the problem manifests.

Michale, computers don't store exact floating point numbers, so you can run into this very easily. You have to work around it by rounding after adding .005 or some such code.

Alan


>Hi!
>
>>>
>But I use vf5.0 ,Could you give me some advice?
><<
>
>No idea - I tested also in Visual FoxPro 05.00.00.0415 for Windows - no problem:

SET DECI to 2
>local v1,v2,v3,v4,v5,v6,v7,v8,v9,v10,v11,v12,v13,v14,v15,v16,v17,v18,v19,v20
>store 0 to v1,v2,v3,v4,v5,v6,v7,v8,v9,v10,v11,v12,v13,v14,v15,v16,v17,v18,v19,v20
>v20=v1+v2+v3+v4+v5+v6+v7+v8+v9+v10+v11+v12+v13+v14+v15+v16+v17+v18+v19
>? STR(v20,30,18)
>