how to read LB value and print as output

I need to print tagname in output message, how to read this value of tagname or LB as output

for(iter=1;iter<9;iter++)
{

    snprintf(tagname, sizeof tagname, "%s%d", "td id='name",iter);

    lr_output_message ("Tagname is %s", tagname); 
    web_reg_save_param("tagname", "LB=tagname", "RB=</a>", "Ord=ALL","NotFound=ERROR","IgnoreRedirections=Yes",
	LAST );

	r=lr_eval_string("tagname");
	lr_output_message("Values for tagname is :%s",r);

}