# On mouse click dbtag=opctag

**URL:** <https://forum.inductiveautomation.com/t/on-mouse-click-dbtag-opctag/2085>\
**Category:** Ignition\
**Created:** [July 27, 2010, 6:25pm UTC](https://forum.inductiveautomation.com/t/on-mouse-click-dbtag-opctag/2085 "2010-07-27T18:25:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Henry](https://avatars.discourse-cdn.com/v4/letter/h/df705f/32.png) [@Henry](https://forum.inductiveautomation.com/u/Henry)\
**Post date:** [July 27, 2010, 6:25pm UTC](https://forum.inductiveautomation.com/t/on-mouse-click-dbtag-opctag/2085/1 "2010-07-27T18:25:35Z")

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I would like to setup [del]an expression[/del] [color=#0000FF]a script[/color] on a mouse click that copies the data value from an OPC tag to a DB tag but I’m not sure the correct syntax.

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**Author:** ![Kyle\_Chase](https://avatars.discourse-cdn.com/v4/letter/k/9de0a6/32.png) [@Kyle\_Chase](https://forum.inductiveautomation.com/u/Kyle_Chase)\
**Post date:** [July 27, 2010, 7:08pm UTC](https://forum.inductiveautomation.com/t/on-mouse-click-dbtag-opctag/2085/2 "2010-07-27T19:08:17Z")

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`opcValue = system.tag.getTagValue("[]OPCTag")
system.tag.writeToTag("[]DBTag",opcValue)`

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**Author:** ![Henry](https://avatars.discourse-cdn.com/v4/letter/h/df705f/32.png) [@Henry](https://forum.inductiveautomation.com/u/Henry)\
**Post date:** [July 28, 2010, 5:50pm UTC](https://forum.inductiveautomation.com/t/on-mouse-click-dbtag-opctag/2085/3 "2010-07-28T17:50:44Z")

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Thanks Kyle