pl/sql use tablename as cursor variable

Im trying to write a procedure that will return the rowcount of any table whose name is supplied as avariable to the function. I know it is possible to include a variable in the where clause of a cusor but I seem to have problems including a variable in the from clause:

create or replace procedure RowComparison is
cursor tableName_cur is
select table_name from user_tables;
raph1count number;
t4count number;
tableName_rec tableName_cur%ROWTYPE;
BEGIN
OPEN tableName_cur;
LOOP
FETCH tableName_cur into tableName_rec;
EXIT WHEN tableName_cur%NOTFOUND;
select count(*) into raph1count from tableName_rec. table_name;


I get the same problem if I try to rewrite this using an explicit cursor.

The error I get is this:
PLS-00356: 'TABLENAME_REC.TABLE_NAME' must name a table to which the user has access

Can anyone help?

variabletext := 'select count(*) from '||tableName_rec. table_name;

execute immediate variabletext into raph1count ;

Thanks vijay