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The origin of the stellar and brown dwarf Initial Mass Function (IMF) and whether it is universal are major open questions in modern astrophysics comma impacting our understanding of the star formation process and interpretation of mass to light ratios of unresolved stellar populations. Of particular interest is whether the IMF changes with metallicity comma especially at low metallicities comma which would be conditions applicable for the early Universe. Star-forming regions near the Sun all have close to solar metallicity and are thus not useful for this experiment. The Magellanic Clouds are significantly sub-solar in metallicity comma but are too distant for current telescopes and instrumentation to reach below 0.25 Msun where the Galactic field IMF peaks. Here we propose to target forming star clusters within Sh2-284 comma one of the most metal-poor HII regions in the outer Galaxy. WFC3.s combination of high spatial resolution comma efficient mosaicing possibilities and access to target water absorption bands makes it ideal to map the full area of the clusters and to derive effective temperatures for the low-mass young stellar objects (YSOs) comma allowing them to be placed in the HR diagram and field star contamination eliminated. With a clean sample of low-mass objects down to 50 Jupiter masses comma this study will yield the most comprehensive statistics of the low-mass IMF in low-metalliicity region to date comma enabling a detailed comparison with local field and solar-metallicity cluster IMFs. Our proposed observations have joint coverage with one cluster to be observed with JWST comma which will enable cross calibration of YSO characterization methods between these facilities.