How to rotate blocks while giving a set command? [duplicate]

What command should I use to rotate wood to S,N,W,E,D and U?

I read the entire world edit guide and tried some things but all the results are not satisfactory.

Why don't you look up the wiki for the data values?

You can rotate wood to face in whatever direction you want with WorldEdit by simply substituting [Data Value] with the appropriate one that you're looking for.

After selecting the region with your //wand (AKA. a wooden axe by default),

//set Log:[Data Value] OR //set 17:[Data Value]
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| DIRECTION        |  Oak  | Spruce | Birch | Jungle |
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| Up/down          | 0     | 1      | 2     | 3      |
| East/West        | 4     | 5      | 6     | 7      |
| North/South      | 8     | 9      | 10    | 11     |
| Bark-only        | 12    | 13     | 14    | 15     |
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If you're looking for Acaica and Dark Oak, use the following values:

//set Log2:[Data Value] OR //set 162:[Data Value]
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| DIRECTION        |  Acaica  | Dark Oak |
------------------------------------------
| Up/down          | 0        | 1        |
| East/West        | 4        | 5        |
| North/South      | 8        | 9        |
| Bark-only        | 12       | 13       |
------------------------------------------