laravel - I could not read a property in php. getting non-object exception -


i have defined variable $alarm in php page. returns like; in page try access gradename , calling like; (i want extract details returned alarm details)

 <div class=... $alarm[0]['gradename'] </div>

but im getting 

trying property of non-object (view: /app/resources/views/alarms/ack.blade.php) in c593810096345df8c818851d1e61ae4bc523a3d4.php (line 43) @ compilerengine->handleviewexception(object(errorexception), 0) in phpengine.php (line 44) @ phpengine->evaluatepath('/app/storage/framework/views/c593810096345df8c818851d1e61ae4bc523a3d4.php', array('__env' => object(factory), 'app' => object(application), 'errors' => object(viewerrorbag), 'alarm' => object(alarm), 'yfsessionid' => '2oxcaqwmegxuiyzjm2ox7wmih2bp6hfrwdmxilmcdrjvsmizswbeha==')) in compilerengine.php (line 59)

what i'm doing wrong here?

{"alarmid":173358,"messagenotificationid":"105933", "companyid":"33", "companycode":"euro", "alerttypeid":"23", "alertid":"4314893", "sitecode":"20167822", "sitename":"trafford centre service station", "tanknumber":null, "dispensernumbedr":null, "hosenumber":null, "gradeid":null, "gradename":null}

if in php class;

public function(){  **echo "<font color='red'><b>$alarm->companycode</font></b><br>";**  //---------->i see    return view('alarms.ack', ['alarm' => $alarm, 'yfsessionid' => $yfsessionid]); }

in view if access non-object issue;

<div class="form-group">                                     <label class="col-md-4 control-label">volume</label>                                      <div class="col-md-6 control-label-text-left">                                          {{ $alarm->alarmvolume }}                                     </div>                                 </div>

in errors says 'alarm' => object(alarm) please try access, gradename property : $alarm->gradename


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