Question juridique clé
Whether the complaint against the refusal to extend the residence permit was sufficiently reasoned for federal review.
Solution extraite
The complaint did not meet the statutory reasoning requirements and could not be considered.
Motifs extraits
The appellant failed to substantiate, with specific arguments, why the cantonal court's factual findings were arbitrary or legally erroneous; he merely repeated his own version of events and did not properly challenge the evidentiary assessment.