Parse Expression

Hello everyone, I would like to construct a datafram with the following
command. 

eval(parse(text=paste("df=data.frame(", cmd, ")", sep="")))

But it comes out " Error in parse(file, n, text, prompt, srcfile, encoding)
: 
        syntax error, unexpected $undefined, expecting ',' in
"df=data.frame(cbcDummy10to12 = 1,cbcForeWrld_Ret = 1,cbcYC10-2_"


"cmd" is a character string I obtained before, it is like:
 
cmd
[1] "cbcDummy10to12 = 1,cbcForeWrld_Ret = 1,cbcYC10-2_wld = 1"

Could anyone give me some advice? Many thanks.

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