fixed one more review comment

src/FirmwarePlugin/APM/APMParameterMetaData.cc

@@ -355,6 +355,9 @@ bool APMParameterMetaData::parseParameterAttributes(QXmlStreamReader& xml, APMFa
                         }
                     }
                 }
+
+                // everything should be good. lets collect min and max
+                if (rangeList.count() == 2) {
                     rawMetaData->min = rangeList.first().trimmed();
                     rawMetaData->max = rangeList.last().trimmed();
 
@@ -367,6 +370,7 @@ bool APMParameterMetaData::parseParameterAttributes(QXmlStreamReader& xml, APMFa
                     }
                     qCDebug(APMParameterMetaDataLog) << "read field parameter " << "min: " << rawMetaData->min
                                                      << "max: " << rawMetaData->max;
+                }
             } else if (attributeName == "Increment") {
                 QString increment = xml.readElementText();
                 qCDebug(APMParameterMetaDataLog) << "read Increment: " << increment;