# Some block not avaiable

**URL:** <https://www.ruby-forum.com/t/some-block-not-avaiable/232753>\
**Category:** GNU Radio\
**Created:** [October 26, 2014, 11:15am UTC](https://www.ruby-forum.com/t/some-block-not-avaiable/232753 "2014-10-26T11:15:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [October 26, 2014, 11:15am UTC](https://www.ruby-forum.com/t/some-block-not-avaiable/232753/1 "2014-10-26T11:15:41Z")

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Hi there,i installed gnuradio and i do some tutorial ,but in my  
gnuradio(install in software center)misssing block variable slider.I  
checked in the install folder and saw the file VariableSlider.xml but it  
not appear when i run gnuradio.How to solve it?Please help me!