Like standard Japanese, Vな is also used in Kansai-ben for strong prohibition. However, instead of the dictionary form? as in standard Japanese, the stem? form is used.
The prohibition expression Vてはいけない can become Vたらあかん in Kansai-ben. Similarly, the Vないで in standard Japanese can become either Vんといて or Vんとって in Kansai-ben. Paralleling standard Japanese, Vたらあかん ex...