Tagging preset: check and set key/value for more then one kv.

[Allroads]

We have a traffic_sign C12

Because this sign works from one side. Their could be no sign on the other side.
Other side, it is possible to enter and turn on road or visit a house/field. And go back.
The way must set to forward or backward on a small section. Where you do not turn anymore.

For the traffic_sign, mofa, moped and motor_vehicle

Can this be done with one checkbox? forward or backward.

And not with multiple checkboxes.

<item name="C12 " icon="traffic_signs/NL/NL_C12.png" type="node,way">
        <key key="traffic_sign"value="NL:C12" />
        <key key="motor_vehicle" value="no" />
        <key key="mofa" value="yes" />
        <key key="moped" value="yes" />

        <space />
        <check key="traffic_sign:forward" text="Forward motor_vehicle" default="off" value_off="" value_on="NL:C12" />
        <check key="traffic_sign:backward" text="Backward motor_vehicle" default="off" value_off="" value_on="NL:C12" />
        <check key="motor_vehicle:forward" text="Forward motor_vehicle" default="off" value_off="" value_on="no" />
        <check key="motor_vehicle:backward" text="Backward motor_vehicle" default="off" value_off="" value_on="no" />
        <check key="mofa:forward" text="Forward motor_vehicle" default="off" value_off="" value_on="yes" />
        <check key="mofa:backward" text="Backward motor_vehicle" default="off" value_off="" value_on="yes" />
        <check key="moped:forward" text="Forward motor_vehicle" default="off" value_off="" value_on="yes" />
        <check key="moped:backward" text="Backward motor_vehicle" default="off" value_off="" value_on="yes" />
</item>

Off course in above example the original k/v must be replace by *:forward= or *:backward=

[Allroads]

Thanks for cleaning up, hope someone have a solution.
I tried to search in other presets if this is done, but could not find a example.

[Allroads]

Is it possible to make new attributes?
keys
values_on
values_off

That we can make such check entry?
multicheck?

<multicheck keys="traffic_sign:forward,motor_vehicle:forward,mofa:forward,moped:forward" text="Forward all" default="off" values_off="" values_on="NL:C12,no,yes,yes" />                        
<multicheck keys="traffic_sign:backward,motor_vehicle:backward,mofa:backward,moped:backward" text="Backward all" default="off" values_off="" values_on="NL:C12,no,yes,yes" />
                

When you give people the choice in multiselect, the failure rate for traffic-signs is higher.
This new enchancement give direct the right tags for traffic_signs situations.

[Allroads]

​https://help.openstreetmap.org/questions/57286/josm-preset-forward-backward-with-one-checkbox-how
I also asked it here.

Is it true what SimonPoole says?

Could this not be done?

It is important for a good preset for the traffic_sign tagging on the road.

[skyper]

This has nothing to do with external presets but is a feature request for multiple tags within one checkbox in tagging presets.