Toggle GPIO Input

Hi
i am looking for an funktion that does the following:
on my Raspberry when i push an button (GPIO in 7), than i want to send out udp1, if i push the same button a second time i want to send out udp2, and than if i push the button another time i want to sent out udp1....so now i have tried it with the toggle note, but i have no result which is working. any ideas for an beginner to solve the problem
thanks

You need to save the last state in a context which can be remembered when the next msg arrives. Either you take a flow variable or a context variable in a function node.

thanks, but for me as an beginner this is too compicated, is there no other way. over a node witch i can install?

Did you try searching flows.nodered.org for Toggle. I found this very quickly there. I haven't tried it but it looks close to what you want. Toggle Switch Subflow (flow) - Node-RED

Import this function node:

[
    {
        "id": "db823e37fd839077",
        "type": "function",
        "z": "f87aa05e3297dcd1",
        "name": "",
        "func": "var output = !(context.get(\"toogle\")||false);\ncontext.set(\"toogle\",output);\nmsg.payload = output ? \"udp1\" : \"udp2\";\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 720,
        "y": 1040,
        "wires": [
            [
                "6d935a3dcad3e665"
            ]
        ]
    }
]

toogles your output.

thank you, that works perfect

No code version

[
    {
        "id": "db823e37fd839077",
        "type": "function",
        "z": "f87aa05e3297dcd1",
        "name": "",
        "func": "var output = !(context.get(\"toogle\")||false);\ncontext.set(\"toogle\",output);\nmsg.payload = output ? \"udp1\" : \"udp2\";\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 720,
        "y": 1040,
        "wires": [
            [
                "6d935a3dcad3e665"
            ]
        ]
    }
]