How to get the value from sqf:user-entry? - schematron

Question

I want to get two integers from the user when the user tries to apply a quick fix using schematron rules and use the values as variables in the replace operation. But I get the error saying "variable has not been declared"
I have this schematron rule that finds the first empty choice element in a step and prompts the user to apply a quick fix. When the user applies the quick fix, a dialog box appears and prompts the user to provide two integers. The user input will be used to calculate a range of step elements.
The schematron rule
<sch:rule context="choice[1][not(normalize-space())]">
<sch:assert test="choice[1][not(normalize-space())]" sqf:fix='editchoice'>great
</sch:assert>
</sch:rule>
the fix
<sqf:fix id="editchoice">
<sqf:description>
<sqf:title>Enter the last step number</sqf:title>
</sqf:description>
<sqf:user-entry name="step1" type="xs:integer" >
<sqf:description>
<sqf:title>Enter the first step to be converted to choice</sqf:title>
</sqf:description>
</sqf:user-entry>
<sqf:user-entry name="laststep" type="xs:integer">
<sqf:description>
<sqf:title>Enter the last step to be converted</sqf:title>
</sqf:description>
</sqf:user-entry>
<sqf:replace match="./ancestor::steps/step[position()>$step1 and not(position()>=$laststep)]" target='choice' node-type='keep'></sqf:replace>
</sqf:fix>
The expected result
$step1 and $laststep should be replaced with the userinput values.
actual result
Variable step1 has not been declared (or its declaration is not in scope)

Answer 1

Currently there is no implementation which supports the usage of user entries in the match attribute (I'm working on that...).
Meanwhile you have to do this:
<sqf:replace match="./ancestor::steps/step">
<sch:let name="pos" value="count(preceding-sibling::step) + 1"/>
<xsl:choose>
<xsl:when test="$pos > number($step1) and not($pos >= number($laststep))">
<choice/>
</xsl:when>
<xsl:otherwise>
<sqf:copy-of select="."/>
</xsl:otherwise>
</xsl:choose>
</sqf:replace>
Note: you need the number() because the Oxygen nativ implementation does not support the type of user-entry yet.