From ef23e37e4c204d4642cb16b58e7372f7209c8e55 Mon Sep 17 00:00:00 2001
From: Ivan Tustanivskyi <tustanivsky@gmail.com>
Date: Wed, 27 Aug 2025 16:04:30 +0300
Subject: [PATCH 1/2] Update sampling docs

---
 docs/platforms/unreal/configuration/options.mdx             | 6 ------
 docs/platforms/unreal/tracing/index.mdx                     | 6 ------
 .../performance/traces-sampler-as-sampler/unreal.mdx        | 2 +-
 3 files changed, 1 insertion(+), 13 deletions(-)

diff --git a/docs/platforms/unreal/configuration/options.mdx b/docs/platforms/unreal/configuration/options.mdx
index 6b71720b5ece7..864e27b2db487 100644
--- a/docs/platforms/unreal/configuration/options.mdx
+++ b/docs/platforms/unreal/configuration/options.mdx
@@ -186,10 +186,4 @@ A number between `0` and `1`, controlling the percentage chance a given transact
 
 A function responsible for determining the percentage chance a given transaction will be sent to Sentry. It will automatically be passed information about the transaction and the context in which it's being created, and must return a number between `0` (0% chance of being sent) and `1` (100% chance of being sent). Can also be used for filtering transactions, by returning 0 for those that are unwanted. Either this or <PlatformIdentifier name="traces-sample-rate" /> must be defined to enable tracing.
 
-<Alert>
-
-Currently, there is no support for sampling functions on Windows or Linux (<PlatformIdentifier name="traces-sampler" />).
-
-</Alert>
-
 </ConfigKey>
diff --git a/docs/platforms/unreal/tracing/index.mdx b/docs/platforms/unreal/tracing/index.mdx
index 3fa95d300ffab..1701a03dcec62 100644
--- a/docs/platforms/unreal/tracing/index.mdx
+++ b/docs/platforms/unreal/tracing/index.mdx
@@ -22,12 +22,6 @@ First, enable tracing and configure the sample rate for transactions. Set the sa
 
 The two options are meant to be mutually exclusive. If you set both, <PlatformIdentifier name="traces-sampler" /> will take precedence.
 
-<Alert>
-
-Currently there is no support for sampling functions on Windows/Linux (<PlatformIdentifier name="traces-sampler" />).
-
-</Alert>
-
 <PlatformContent includePath="performance/configure-sample-rate" />
 
 Learn more about tracing <PlatformLink to="/configuration/options/#tracing-options">options</PlatformLink>, how to use the <PlatformLink to="/configuration/sampling/#setting-a-sampling-function">TracesSampler</PlatformLink> function, or how to <PlatformLink to="/configuration/sampling/#sampling-transaction-events">sample transactions</PlatformLink>.
diff --git a/platform-includes/performance/traces-sampler-as-sampler/unreal.mdx b/platform-includes/performance/traces-sampler-as-sampler/unreal.mdx
index 58843aff2796c..e37cfaeb7d6b9 100644
--- a/platform-includes/performance/traces-sampler-as-sampler/unreal.mdx
+++ b/platform-includes/performance/traces-sampler-as-sampler/unreal.mdx
@@ -7,7 +7,7 @@ class USomeTraceSampler : public USentryTraceSampler
 public:
 	virtual bool Sample_Implementation(USentrySamplingContext* samplingContext, float& samplingValue) override
     {
-        const FString& gameMode =
+        const FSentryVariant& gameMode =
             *samplingContext->GetCustomSamplingContext().Find("GameMode");
 
         if (gameMode.Equals(TEXT("ranked")))

From c5b1d23908cf2a8de972c6fc7a992c7804a424d1 Mon Sep 17 00:00:00 2001
From: Ivan Tustanivskyi <tustanivsky@gmail.com>
Date: Thu, 28 Aug 2025 16:58:22 +0300
Subject: [PATCH 2/2] Fix example code

---
 .../performance/traces-sampler-as-sampler/unreal.mdx        | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/platform-includes/performance/traces-sampler-as-sampler/unreal.mdx b/platform-includes/performance/traces-sampler-as-sampler/unreal.mdx
index e37cfaeb7d6b9..78123d3155588 100644
--- a/platform-includes/performance/traces-sampler-as-sampler/unreal.mdx
+++ b/platform-includes/performance/traces-sampler-as-sampler/unreal.mdx
@@ -10,17 +10,17 @@ public:
         const FSentryVariant& gameMode =
             *samplingContext->GetCustomSamplingContext().Find("GameMode");
 
-        if (gameMode.Equals(TEXT("ranked")))
+        if (gameMode.GetValue<FString>().Equals(TEXT("ranked")))
         {
             // Ranked matches are important - take a big sample
             samplingValue = 0.5;
         }
-        else if (gameMode.Equals(TEXT("quick_match")))
+        else if (gameMode.GetValue<FString>().Equals(TEXT("quick_match")))
         {
             // Quick matches less important and happen more frequently - only take 20%
             samplingValue = 0.2;
         }
-        else if (gameMode.Equals(TEXT("training")))
+        else if (gameMode.GetValue<FString>().Equals(TEXT("training")))
         {
             // Training matches are just noise - drop all transactions
             samplingValue = 0.0;