Passing partnerCustomerId

const IframePreview = () => {
  return (
    <div style={{
        display: 'flex',
        justifyContent: 'center',
        alignItems: 'center',
        height: '100%'
      }}>
      <iframe
        src="https://global-stg.transak.com/?
          apiKey=a2374be4-c59a-400e-809b-72c226c74b8f
          &environment=STAGING
          &partnerCustomerId=partnerUniqueCustomerId"
        allow="camera;microphone;payment"
        height={650}
        width={400}
      />
    </div>
  );
};