Measuring which cultural values a languagemodel agent falls back on when it must act is a fundamental problem in multilingual and culturally-grounded evaluation. Current agent benchmarks are designed primarily to measure task success in high-resource languages such as English, which creates major limitations when the question is whose culture an agent’s committed action encodes. The key challenges are the absence of an acting-based value-conflict benchmark and the difficulty of preserving culturallyloaded meaning when a scenario is carried into a low-resource language such as Bangla. In this paper, to study these cultural defaults under action, we present CultAct-ML, a benchmark of 39 value-conflict dilemmas recast as secondperson agent actions and evaluated with a twophase plan–act agent over English, Indonesian, and Bangla. We further introduce three metrics that measure the Western-cluster default, its reliability across languages, and the drift of the agent’s plan, and every Bangla item is verified by a native speaker. Across three models and three repeats, a total of 1,053 plan–act decisions are produced, all valid. We find that a Western default holds above chance for Qwen2.5-72B and Kimi K2 in every language but fades to chance for Qwen3-235B outside English. After stratifying the plan drift by the language of the plan, we further find that Qwen3-235B plans in English rather than Bangla on 70.1% of Bangla scenarios, highlighting a cross-language effect that a pooled analysis hides entirely. The scenarios, code, and all metrics are publicly released.1

Code generation from natural language instructions in Bangla is a fundamental task in programming automation, as explored in BLP-2025 Shared Task 2: Code Generation in Bangla. Current code generation models are designed primarily for high-resource languages such as English, which creates major limitations when applied to Bangla. The key challenges are limited training data and difficulty in correctly interpreting Bangla programming instructions. In this paper, to accommodate Bangla instructions, we present a chain of thought (CoT) based prompting approach with Qwen2.5-Coder-14B model. We further introduce few-shot example in the prompt template to improve the accuracy. During competition, an accuracy of 93% is achieved in the shared test set (test_v1.csv) and 82.6% is achieved on the public and private test sets (hidden). After the competition is closed, we implement a debugger prompt technique which refines answers with 3 iterative fixing attempts. Applying this new technique on the public shared test set, our system outperforms by 7% and achieves 100% accuracy on the public test set, highlighting the effectiveness of combining CoT prompting with iterative debugging.