[galaxy-user] EMBOSS fuzzpro tool pattern is not read correctly from the input

Hello, I'm trying to run EMBOSS fuzzpro tool, however, I get Illegal character error '_', aparently from the fuzzpro tool itself. One of the input parameters is amino acid sequence pattern, for instance I submit AV[RL]E, but somehow it get's converted and passed to the fuzzpro as AV__ob__RL__cb__E, and then apparently these '_' are causing the error. I tested the tool on command line and it works fine. Also it works on Galaxy if I submit AVRE (just amino acid letters no special characters for pattern) So basically seems that in my input pattern string AV[RL]E the character [ is somehow converted into __ob__ and character ] is converted into __cb__ Any ideas how to fix this? Thanks, Domantas