Task

In a YML feed, some products have oldprice equal to price or empty. That old price should not be exported.

Short answer

Open oldprice and add two conditions: oldprice is not empty and oldprice is not equal to {/yml_catalog/shop/offers/offer/price}.

How to do it in Eofferix

In the XML/YML snapshot, select the oldprice value.
Open the value settings.
The animation shows opening settings for the selected value.
Add an export condition on oldprice: oldprice is not empty and oldprice does not equal {/yml_catalog/shop/offers/offer/price}.
This makes Eofferix take the value only from the needed repeated block.

Before / after

Before

source data

<yml_catalog date="2026-06-29 10:00">
  <shop>
    <offers>
      <offer id="YML-17001"><name>Hudson lamp</name><price>1290.00</price><oldprice>1490.00</oldprice><currencyId>USD</currencyId></offer>
      <offer id="YML-17002"><name>Parker chair</name><price>8400.00</price><oldprice>8400.00</oldprice><currencyId>USD</currencyId></offer>
      <offer id="YML-17003"><name>Harbor shelf</name><price>990.00</price><oldprice></oldprice><currencyId>USD</currencyId></offer>
    </offers>
  </shop>
</yml_catalog>

After

result

<yml_catalog date="2026-06-29 10:00">
  <shop>
    <offers>
      <offer id="YML-17001"><name>Hudson lamp</name><price>1290.00</price><oldprice>1490.00</oldprice><currencyId>USD</currencyId></offer>
      <offer id="YML-17002"><name>Parker chair</name><price>8400.00</price><currencyId>USD</currencyId></offer>
      <offer id="YML-17003"><name>Harbor shelf</name><price>990.00</price><currencyId>USD</currencyId></offer>
    </offers>
  </shop>
</yml_catalog>

What to keep in mind

This condition hides only the oldprice field, not the whole item.
No regular expression is needed here: the service compares two values from the same offer directly.

How to hide oldprice when it equals price in YML

How to do it in Eofferix

Before / after

Before

After

What to keep in mind

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