public void setExpressionAttributeValues(java.util.Map<String, AttributeValue> expressionAttributeValues) {
        this.expressionAttributeValues = expressionAttributeValues;
    }
<p>
One or more values that can be substituted in an expression.
</p>
<p>
Use the <b>:</b> (colon) character in an expression to dereference an attribute value. For example, suppose that
you wanted to check whether the value of the <i>ProductStatus</i> attribute was one of the following:
</p>
<p>
<code>Available | Backordered | Discontinued</code>
</p>
<p>
You would first need to specify <code>ExpressionAttributeValues</code> as follows:
</p>
<p>
<code>{ ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }</code>
</p>
<p>
You could then use these values in an expression, such as this:
</p>
<p>
<code>ProductStatus IN (:avail, :back, :disc)</code>
</p>
<p>
For more information on expression attribute values, see <a
href="https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html"
>Condition Expressions</a> in the <i>Amazon DynamoDB Developer Guide</i>.
</p>

@param expressionAttributeValues
       One or more values that can be substituted in an expression.</p>
       <p>
       Use the <b>:</b> (colon) character in an expression to dereference an attribute value. For example,
       suppose that you wanted to check whether the value of the <i>ProductStatus</i> attribute was one of the
       following:
       </p>
       <p>
       <code>Available | Backordered | Discontinued</code>
       </p>
       <p>
       You would first need to specify <code>ExpressionAttributeValues</code> as follows:
       </p>
       <p>
       <code>{ ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }</code>
       </p>
       <p>
       You could then use these values in an expression, such as this:
       </p>
       <p>
       <code>ProductStatus IN (:avail, :back, :disc)</code>
       </p>
       <p>
       For more information on expression attribute values, see <a href=
       "https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html"
       >Condition Expressions</a> in the <i>Amazon DynamoDB Developer Guide</i>.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/DeleteItemRequest.java