update realm migration for FilterCondition

app/build.gradle

@@ -28,7 +28,7 @@ android {
         applicationId "net.pokeranalytics.android"
         minSdkVersion 23
         targetSdkVersion 28
-        versionCode 16
+        versionCode 18
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/java/net/pokeranalytics/android/model/migrations/PokerAnalyticsMigration.kt

@@ -59,7 +59,7 @@ class PokerAnalyticsMigration : RealmMigration {
 
             schema.get("FilterCondition")?.let {
                 it.removeField("blindValues")
-                it.addField("operator", String::class.java).setNullable("operator", true)
+                it.addField("operator", Int::class.java).setNullable("operator", true)
                 it.addField("intValue", Int::class.java).setNullable("intValue", true)
                 it.addField("doubleValue", Double::class.java).setNullable("intValue", true)
                 it.addField("stringValue", String::class.java).setNullable("stringValue", true)