If you want to write to 5 out of 7 cameras, you’ll need to disable automatic writing, and add a scene to write 5 times, e.g.
lul_settings={}
lul_settings[“webcamNumber”]=71
luup.call_action(“urn:milliesoft-com:serviceId:WebcamDropboxUploader2”,“SendSnapshot”, lul_settings,104)
lul_settings[“webcamNumber”]=72
luup.call_action(“urn:milliesoft-com:serviceId:WebcamDropboxUploader2”,“SendSnapshot”, lul_settings,104)
lul_settings[“webcamNumber”]=75
luup.call_action(“urn:milliesoft-com:serviceId:WebcamDropboxUploader2”,“SendSnapshot”, lul_settings,104)
lul_settings[“webcamNumber”]=76
luup.call_action(“urn:milliesoft-com:serviceId:WebcamDropboxUploader2”,“SendSnapshot”, lul_settings,104)
lul_settings[“webcamNumber”]=77
luup.call_action(“urn:milliesoft-com:serviceId:WebcamDropboxUploader2”,“SendSnapshot”, lul_settings,104)