# [✓] Stop re-evaluating an assignment like x=x+1 in Manipulate?

Posted 11 months ago
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 Can some shed some light on the following behaviour of manipulate:This works like expected: Manipulate[ x = x0; x , {x0, 0, 1}] However, if there is an assignment like x= x+1, where the same variable is on both side of the "=", this seems to be interpreted as a recursion and Manipulate does not stop evaluating: Manipulate[ x = x0; x = x + 1; x , {x0, 0, 1}] 
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Posted 11 months ago
 Daniel,I assume by "recursion" you mean that the Manipulate keeps reevaluating and getting the same answer (not counting up). Manipulate[x = x0; x = x + 1; x, {x0, 0, 1}, TrackedSymbols :> {x0}] Will fix your issue. Now it only updates when x0 changes and not when x changes (which causes a total reevaluation of the expressions)Regards,Neil