Add Z_DROP to GOTO_PURGE_BUCKET

macros/helpers/nozzle_cleaning.cfg

@@ -170,4 +170,4 @@ gcode:
 description: Move over the purge bucket (a wrapper to have access in gui)
 gcode:
     {% set Z_DROP = params.Z_DROP|default(0)|int %}
-    _CONDITIONAL_MOVE_TO_PURGE_BUCKET
+    _CONDITIONAL_MOVE_TO_PURGE_BUCKET  Z_DROP={Z_DROP}