[GRASS-user] script option

[frank]

Hi dear grass users,

I'm trying to get two field name of an attribute table (ctx_map) by the 
options of the gui. But I can access only at the first one and I don't 
find why...??. See my code below :

#%option G_OPT_V_MAP
#% key: ctx_map
#% description: vector data
#% required : yes
#% guidependency:layer,ctx_wf,ctx_wtg
#%end
#%option G_OPT_V_FIELD
#% key:ctx_layer
#% guidependency:ctx_wf,ctx_wtg
#%end
#%option G_OPT_DB_COLUMN
#% key:ctx_wf
#% description: wf name
#% required: yes
#%end
#%option G_OPT_DB_COLUMN
#% key:ctx_wtg
#% description: wtg name
#% required: yes
#%end

Thank you for your help.
Frank