Node-red raspberry pi multiple input

[Grace1]

i tryed raspberry pi gpio led control

"A" led is turned on when the "A" switch is pressed. →success

"B" led is turned on when the "B" switch is pressed. →success

If the "A" and "B" switches are simultaneously pressed, the "C" lead is turned on .→fail...

somebody help me please

...

[Grace1]

[{"id":"79f3f425.14b44c","type":"rpi-gpio out","z":"fb042b83.1102b8","name":"","pin":"37","set":"","level":"0","freq":"","out":"out","x":540,"y":180,"wires":[]},{"id":"ac4a24f8.a35c18","type":"rpi-gpio out","z":"fb042b83.1102b8","name":"","pin":"35","set":"","level":"0","freq":"","out":"out","x":540,"y":335,"wires":[]},{"id":"ebb19616.65ca18","type":"rpi-gpio out","z":"fb042b83.1102b8","name":"","pin":"33","set":"","level":"0","freq":"","out":"out","x":540,"y":475,"wires":[]},{"id":"b884dc9d.f5d9e","type":"rpi-gpio in","z":"fb042b83.1102b8","name":"","pin":"31","intype":"tri","debounce":"25","read":false,"x":530,"y":120,"wires":[["3198b12c.e5389e","79f3f425.14b44c"]]},{"id":"3f3426d3.a9a31a","type":"rpi-gpio in","z":"fb042b83.1102b8","name":"","pin":"29","intype":"tri","debounce":"25","read":false,"x":530,"y":280,"wires":[["aca97f17.b4c5","ac4a24f8.a35c18"]]},{"id":"ed65ff1f.ab887","type":"rpi-gpio in","z":"fb042b83.1102b8","name":"","pin":"23","intype":"tri","debounce":"25","read":false,"x":530,"y":420,"wires":[["ab623e01.f8393","ebb19616.65ca18"]]}]

+This is the flow I used.

[Colin]

Unfortunately your flow is not importable. Please see this for advice on how to share your flow. You can edit your previous post so that we can import it.

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[zenofmud]

Your flow has no logic to check if button A and B are being pressed at the same time. All you have is three gpoi-in nodes connected to three gpio-out pins.

You will need to add some logic to see if both pins are pressed and send tat to the gpio-out for LED C