[SOLVED] custom textarea box not showing on front end

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if (isset($this->request->post['config_footer_description'])) {
			$data['config_footer_description'] = $this->request->post['config_footer_description'];
		} else {
			$data['config_footer_description'] = $this->config->get('config_footer_description');
		}

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$_['entry_footer_description']       = 'Footer Description';

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<div class="form-group">
                <label class="col-sm-2 control-label" for="input-footer-description">{{ entry_footer_description }}</label>
                <div class="col-sm-10">
                  <textarea name="config_footer_description" rows="5" placeholder="{{ entry_footer_description }}" id="input-footer-description" class="form-control">{{ config_footer_description }}</textarea>
                </div>
              </div>

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$this->config->get('config_footer_description');

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<p>
              {{ footer_description }}
              </p>

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$this->config->get('config_footer_description');

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$data['footer_description']

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$data['footer_description']

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$this->config->get('config_footer_description');

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$data['footer_description'];

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$data['footer_description'] = $this->config->get('config_footer_description');