how to make dynamic form url in JSP

I have a legacy system developed 10 years ago.

 A jsp page---SalesEditBillingAddress.jsp

<jsp:include page="/WEB-INF/forms/include/edit_billing_address.jsp" > 
<jsp:param name="dept" value="sales"/>
</jsp:include>    

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second jsp page---marketingEditBillingAddress.jsp

<jsp:include page="/WEB-INF/forms/include/edit_billing_address.jsp" > 
<jsp:param name="dept" value="marketing"/>
</jsp:include>    

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The reason to pass the parameter is because the generic page----edit_billing_address.jsp has different form action need to be submitted based on different parameters.

  <html:form action="/actions/${param.dept}/editBillingAddress">
<html:text name="customerBillingAddressBean" property="address1"  maxlength="60"> </html:text> 
.............
<html:text name="customerBillingAddressBean" property="contact" maxlength="60"></html:text>
<html:text name="customerBillingAddressBean" property="email" maxlength="80"></html:text>

<button type = "submit" class ="btn btn-primary">Submit</button>		   
</html:form>        

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however, tomcat 8.0 with java 1.8 complain about this line of code:

<html:form action="/actions/${param.dept}/editBillingAddress">

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javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot retrieve mapping for action /actions/${param.dept}/editBillingAddress

The example on this page:

http://beginnersbook.com/2013/12/jsp-include-with-parameter-example/

shows that my code is nothing wrong about it.

my question is: how to make the parameter work in the action URL?

I also tried the following code:

			 
			 <c:set var="myVar" value="${param.dept}" />

			 <c:if test = "${myVar eq 'sales'}">
			   <html:form action="/actions/sales/editBillingAddress">  
			 </c:if>
		    
		        <c:if test = "${myVar eq 'marketing'}">
			   <html:form action="/actions/marketing/editBillingAddress">
		         </c:if>

                ............. many input fields ...............

                        <button type = "submit" class ="btn btn-primary">Submit</button>		           
	                </html:form>        
	  

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but it doesn't work because the eclipse compiler give error message due to only one closed form tag could be found.