hive> set x='test variable'; hive> ${hiveconf:x}; FAILED: Parse Error: line 1:0 cannot recognize input near ''test variable'' '<EOF>' '<EOF>' : passing parameter in hive is not working for me please see below.

Example 1)
hive> set x='test variable';
hive> ${hiveconf:x};
FAILED: Parse Error: line 1:0 cannot recognize input near ''test variable'' '<EOF>' '<EOF>'

