M6 remap with tool_touch_off.ngc causing gcode parser to fail

[code][qtpyvcp.plugins.gcode_properties][DEBUG] P value out of range with G10 L1 (gcode_properties.py:681)

https://github.com/kcjengr/probe_basic/blob/main/configs/probe_basic/subroutines/tool_touch_off.ngc#L93
https://github.com/kcjengr/qtpyvcp/blob/main/src/qtpyvcp/plugins/gcode_properties.py#L677

from the tests I did, the issue is with having parameter #5400 there
So something is unable to translate parameter number into actual parameter and hence throwing error code with P value out of range with G10 L1

Question is, if I did something wrong - like placing tool_touch_off.ngc all into M6 remap call
or is there a bug with interpreting parameter number in call:

[code][code]result, seq = gcode.parse(self.loaded_file, self.canon, unitcode, initcode)

O<m6remap> sub
;(debug, change: current_tool=#<_current_tool>)
;(debug, change: selected_tool=#<_selected_tool>)

;o100 if [EXISTS[#<_ini[tool_change]xpos>]]
;  (debug, [tool_change]xpos exists: #<_ini[tool_change]xpos>)
;o100 else
;  (debug, [tool_change]xpos does not exist)
;o100 endif

;o110 if [EXISTS[#<_ini[tool_change]ypos>]]
;  (debug, [tool_change]ypos exists: #<_ini[tool_change]ypos>)
;o110 else
;  (debug, [tool_change]ypos does not exist)
;o110 endif

M73

#<tmp_current_tool> = #<_current_tool>
#<tmp_selected_tool> = #<_selected_tool>
#<init_x> = #<_x>
#<init_y> = #<_y>
#<init_z> = #<_z>

(only do toolchange if the current tool is different from selected tool)
o100 if [#<tmp_current_tool> NE #<tmp_selected_tool>]

  (go to tool change position defined in ini, via safe Z0)
  G90
  G0 G53 Z#5163
  G0 G53 X#<_ini[tool_change]xpos> Y#<_ini[tool_change]ypos>

o100 endif

M6 (use built in M6 behavior)

(tool touchoff after M6 tool change)
o110 if [#<tmp_current_tool> NE #<tmp_selected_tool>]
  o<tool_touch_off> call
o110 endif

(go to initial XY position via safe Z0 then go initial Z0 position)
G90
G0 G53 Z#5163
G0 X#<init_x> Y#<init_y>

O<m6remap> endsub [1]
m2