Here is my piece of code: 

        if { ( [info exist flowEF_$link] && $flowEF_$link != "" )  ||  ( [info
exists flowBE_$link] && $flowBE_$link != "" )} { ......}


The error info is following : 

ns: flowstats E1C1: syntax error in expression " ( [info exist flowEF_$link]
&& $flowEF_$link != "" )  ||  (...": looking for close parenthesis
    ("if" test expression)
    while compiling
"if { ( [info exist flowEF_$link] && $flowEF_$link != "" )  ||  ( [info
exists flowBE_$link] && $flowBE_$link != "" )} {

                set bdepEF_$link [$flowEF..."
    (compiling body of proc "flowstats", line 13)



I couldnot find where is the syntax error. Someone knows? 

Thanks 
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