Problem with mapping SKU

Hello,

How can I mapped SKU tag if in the XML file it is visible as “productCode” in different lines.

When I get it in plugin I have. It depends of many tags. How get it in all XML file.

{//offer/property[4]/@name}

or

{//offer/property[5]/@name}

or

{//offer/property[6]/@name}

1 example:

<property name="Opakowanie">4</property>
<property name="Wymiary">(h)105</property>
<property name="Pojemno??">426</property>
<property name="categoryId">2202</property>
<property name="productCode">SWHSSB151</property>
<property name="largeSize">0</property>
<property name="tillStockLasts">0</property>
<property name="basePrice">165.30</property>
<property name="productId">24637</property>

2 example:

<property name="Opakowanie">12</property>
<property name="Wymiary">65x(h)55</property>
<property name="Pojemno??">100</property>
<property name="Kolor"/>
<property name="categoryId">2209</property>
<property name="productCode">PLGRCEB91</property>
<property name="largeSize">0</property>
<property name="tillStockLasts">0</property>
<property name="basePrice">46.30</property>
<property name="productId">24698</property>

3 example:

<property name="Wymiary">230x(h)1</property>
<property name="Opakowanie">1</property>
<property name="categoryId">2215</property>
<property name="productCode">B2414013</property>
<property name="largeSize">0</property>
<property name="tillStockLasts">0</property>
<property name="basePrice">57.00</property>
<property name="productId">24608</property>

Other topic:

Is it the only map EAN code from XML as woocomerce extra attribute?
BR,

Kamil

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